Hedgehog

Hedgehog (pronounced hej-hog or heg-hawg)

(1) An Old World, insect-eating mammal of the genus Erinaceus, especially E. europaeus, and related genera, having a protective covering of spines on the back (family Erinaceidae, order Insectivora (insectivores)).  They’re noted for their tactic of rolling into a spiny ball when a threat is perceived.

(2) Any other insectivore of the family Erinaceidae, such as the moon rat.

(3) In US use (outside of strict zoological use), any of various other spiny animals, especially the porcupine

(4) In military use, a portable obstacle made of crossed logs in the shape of an hourglass, usually laced with barbed wire or an obstructive device consisting of steel bars, angle irons, etc, usually embedded in concrete, designed to damage and impede the boats and tanks of a landing force on a beach (an Ellipsis of the original Czech hedgehog (an antitank obstacle constructed from three steel rails)).

(5) In military (army or other ground forces) use, a defensive pattern using a system of strong points (usually roughly equally distant from the defended area) where there exists neither the personnel nor materiel to build a defensive perimeter.

(6) In (informal) military use, a World War II (1939-1945) era, an anti-submarine, spigot mortar-type of depth charge, which simultaneously fired a number of explosive charges into the water to create a pattern of underwater explosions, the multiple pressure waves creating a force multiplier effect.

(7) In Australia & New Zealand, a type of chocolate cake (or slice), somewhat similar to an American brownie.

(8) In water way engineering & mining, a form of dredging machine.

(9) In botany, certain flowering plants with parts resembling a member of family Erinaceidae, notably the Medicago intertexta (Calvary clover, Calvary medick, hedgehog medick), the pods of which are armed with short spines, the South African Retzia capensis and the edible fungus Hydnum repandum.

(10) To array something with spiky projections like the quills of a hedgehog.

(11) In hair-dressing, a range of spike hair-styles.

(12) An electrical transformer with open magnetic circuit, the ends of the iron wire core being turned outward and presenting a bristling appearance.

(13) To curl up into a defensive ball (often as hedgehogging).  

(14) In catering, a style used for cocktail party food, consisting of a half melon or potato etc with individual cocktail sticks of cheese and pineapple stuck into it.

(15) In differential geometry, a type of plane curve.

(16) In biochemistry & genetics, as hedgehog signalling pathway, a key regulator of animal development present in many organisms from flies to humans.

(17) In biochemistry, as sonic hedgehog, a morphogenic protein that controls cell division of adult stem cells and has been implicated in the development of some cancers (sometimes capitalized).

1400–1450: From the late Middle English heyghoge, replacing the Old English igl.  The construct was hedge + hog, the first element from the creature’s habit of frequenting hedges, the second a reference to its pig-like snout.  Hedge was from the Middle English hegge, from the Old English heċġ, from the Proto-West Germanic haggju, from the Proto-Germanic hagjō, from the primitive Indo-European kagyóm (enclosure) and was cognate with the Dutch heg and the German Hecke.   Hog was from the Middle English hog, from the Old English hogg, & hocg (hog), which may be from the Old Norse hǫggva (to strike, chop, cut), from the Proto-Germanic hawwaną (to hew, forge), from the primitive Indo-European kewh- (to beat, hew, forge).  It was cognate with the Old High German houwan, the Old Saxon hauwan, the Old English hēawan (from which English gained “hew”).  Hog originally meant “a castrated male pig” (thus the sense of “the cut one” which may be compared to hogget (castrated male sheep)).  The alternative etymology traces a link from a Brythonic language, from the Proto-Celtic sukkos, from the primitive Indo-European suH- and thus cognate with the Welsh hwch (sow) and the Cornish hogh (“pig”).  In the UK, there are a number of synonyms for mammals with spines, all of which evolved as historic regionalisms and those which have endured include urchin (listed as archaic but still used in fiction), furze-pig (West Country), fuzz-pig (West Country), hedgepig (South England), hedgy-boar (Devon) and prickly-pig (Yorkshire).  Hedge-hog is the alternative form.  Hedgehog is a noun & adjective, hedgehogged & hedgehogging are verbs and hedgehogless, hedgehoglike & hedgehoggy are adjectives; the noun plural is hedgehogs.

Hedgehog slice.

A conjecture by German philosopher Arthur Schopenhauer (1788–1860), the hedgehog's dilemma, is a metaphor about the people’s simultaneous long for and the dangers posed by the quest for human intimacy and social interaction.  Schopenhauer illustrated the problem by describing a group of hedgehogs who in cold weather try to move close together to share body-heat.  However, because of the danger they pose to each other by virtue of their sharp spines, they are compelled to maintain a safe distance.  As much as they wish to be close, they must stay distance for reasons beyond their control.  Thus it is with humans who either known instinctively or learn from bitter experience that it’s not possible to enjoy human intimacy without the risk of mutual damage and it is this realization which induces caution with others and stunted relationships.  The most extreme manifestation is self-imposed isolation.

Of course most in modern societies interact with many others and Schopenhauer wasn’t suggesting total social avoidance was in any way prevalent but that most relationships tended to be perfunctory, proper and distant, mediated by “politeness and good manners” part of which is literally “keeping one’s distance”; what is now called one’s “personal space”.  Even among German philosophers with their (not always deserved) reputation for going mad it was a particularly Germanic view which recalls the musing of Frederick II (Frederick the Great, 1712–1786, Prussian king 1740-1786) that “The more I know of the nature of man, the more I value the company of dogs”.  It appealed too to other Teutons.  From Vienna, Sigmund Freud (1856-1939) quoted Schopenhauer’s metaphor in Massenpsychologie und Ich-Analyse (Group Psychology and the Analysis of the Ego (1921)) and heard in the tale the echoes of what so many of his patients had said while reclined on his office sofa.  He’d certainly have recognized as his own work the concept of “basic repression” explored by Berlin-born philosopher Herbert Marcuse (1898–1979) in explaining the mechanisms by which people maintained the “politeness and good manners” Schopenhauer suggested were necessary.  Marcuse’s contribution was the idea of “surplus repression”, those restrictions imposed on human behaviour “necessitated by social domination”, a consequence of the social organization of scarcity and resources in a way not “in accordance with individual needs”.  Some Germans however found some additional repression suited their character.  Albrecht Haushofer (1903–1945), an enigmatic fellow-traveller of the Nazis and for a long time close to the definitely repressed Rudolf Hess (1894–1987; Nazi deputy führer 1933-1941) wrote during the early days of the regime that “…I am fundamentally not suited for this new German world… He, whose faith in human society approximately agrees with Schopenhauer’s fine parable of the hedgehogs – is unsuitable for the rulers of today.”  That notwithstanding, his faith in the Nazis appeared to overcome his doubts because he remained, off and on, in their service until 1945 when, during the last days of the war, he was murdered by the regime.  

Variations of the hedgehog look.

There little to suggest that German habitué of the British Library’s reading rooms, Karl Marx (1818-1883), much dwelled upon hedgehogs, zoological or metaphorical but those who wrote of his work did.  In The Hedgehog and the Fox (a fine essay on Tolstoy published in 1953), Sir Isaiah Berlin (1909-1997) quoted a fragment from the Greek lyric poet Archilochus (circa 680–circa 645 BC): “The fox knows many things, but the hedgehog knows one big thing”.  Hedgehogs, wrote Berlin, were those “…who relate everything to a single central vision, one system, less or more coherent or articulate, in terms of which they understand, think and feel—a single, universal, organizing principle in terms of which alone all that they are and say has significance” while foxes “…pursue many ends, often unrelated and even contradictory, connected, if at all, only in some de facto way, for some psychological or physiological cause, related to no moral or esthetic principle”.  The hedgehog then is like the scientist convinced the one theory, if worked at for long enough, will yield that elusive unified field theory and is “…the monist who relates everything to a central, coherent, all-embracing system” while the fox is the pluralist intrigued by “the infinite variety of things often unrelated and even contradictory to each other”.  Berlin approved of foxes because they seemed to “look and compare” before finding some “degree of truth” which might offer “a point of view” and thus “a starting-point for genuine investigation”.  He labelled Plato, Lucretius, Pascal, Hegel, Dostoevsky, Nietzsche and Proust as hedgehogs (to one degree or another) while Herodotus, Aristotle, Montaigne, Erasmus, Moliere, Goethe, Pushkin, Balzac, Joyce were foxes.  To Berlin, Marx was a hedgehog because he pursued a universal explanatory principle in his advocacy of a materialist conception of history.  Berlin’s thesis was attracted much interest including from Marxists and neo-Marxists and their priceless addition to English was the “quasi-hedgehog” to describe their view being there were more shades to Marx than those of a hedgehog but lest than those of the fox.  Presumably the term quasi-hedgehog was coined because a hybrid of a fox and hedgehog was either unthinkable, unimaginable or indescribable.