Sterling

Sterling (pronounced stur-ling)

(1) Of, relating to, or noting British currency.

(2) Someone or something thoroughly excellent in quality; genuine and reliable.

(3) The standard of fineness for gold and silver coin in the United Kingdom, 0.91666 for gold and 0.500 for silver (also called sterling silver: silver having a fineness of 0.925, now used especially in the manufacture of table utensils, jewelry etc).

(4) A former English silver penny (about 240 of which weighed 1lb (0.453kg), thus setting the value of the British pound sterling, a measure which lasted until decimal conversion in 1971).

1250–1300: From the Middle English, possibly under the influence of the Old English steorra (star), from the Proto-West Germanic sterrō, variant of sternō, from the Proto-Germanic sternǭ, from primitive Indo-European hzstḗr.  The Middle English sterling, sterlinge, sterlynge & starling remain however of uncertain origin.  It may well be from sterling (starling (the bird)) which at one time was engraved on one quarter of the coin or perhaps from the Middle English sterre ((star) + -ling) (as in shilling), as some early Norman silver pennies featured stars.  Sterling is a noun & adjective, sterlingly is an adverb and sterlingness is a noun; the noun plural is sterlings. 

Disputes

Lindsay Lohan wearing sterling silver Evil Eye necklace, Los Angeles, April 2011.

Not all etymologists accept the orthodox view, noting the starred coins were not especially common among Anglo-Saxon currency and the stars on them tended to be small.  The alternative theory is that sterling was from the Old French estedre (stater) and the meaning broadened by the 1560s to "money having the quality of the sterling," and by circa 1600 to "English money in general", operating as an adjective from the early fifteenth century.  From the 1640s came the general sense of "capable of standing a test" (as a sound currency would).  The small silver coin (the sterling) was instrumental also in the origin of “pound” as a measure of money, a pound sterling being originally "a pound weight of sterlings" equal to about 240 coins.  Still more imaginative is the theory that the Hanseatic League was the origin for both the definition and manufacture for in its name is the German name for the Baltic (Ostsee (East Sea)) and from this the Baltic merchants were called Osterlings, or Easterlings.  In 1260, Henry III (1207–1272; King of England 1216-1272) granted them a charter of protection and land for their Kontor, the Steelyard of London, which by the 1340s was also called Easterlings Hall, or Esterlingeshalle and because the value of League's money tended to be more stable than that of England, English traders often stipulated their debts should be in pounds of the Easterlings which commercial practice contracted to "'sterling".  Support for this etymology is limited.