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cock [cock 词源字典]: cock: [OE] The word cock is probably ultimately of onomatopoeic origin, imitative of the male fowl’s call (like the lengthier English cock-adoodle- doo [16], French coquerico, and German kikeriki). Beyond that it is difficult to go with any certainty; it reflects similar words in other languages, such as medieval Latin coccus and Old Norse kokkr, but which if any the English word was borrowed from is not clear.

It has been suggested that it goes back to a Germanic base *kuk-, of which a variant was the source of chicken, but typical Old English spellings, such as kok and kokke, suggest that it may have been a foreign borrowing rather than a native Germanic word – perhaps pointing to Germanic coccus. The origin of the interconnected set of senses ‘spout, tap’, ‘hammer of a firearm’, and ‘penis’ is not known; it is possible that it represents an entirely different word, but the fact that German hahn ‘hen’ has the same meanings suggests otherwise.

Of derived words, cocker [19], as in ‘cocker spaniel’, comes from cocking, the sport of shooting woodcock, and cocky [18] is probably based on the notion of the cock as a spirited or swaggering bird, lording it over his hens (there may well be some connection with cock ‘penis’, too, for there is an isolated record of cocky meaning ‘lecherous’ in the 16th century). Cockerel [15] was originally a diminutive form.
=> chicken, cocky[cock etymology, cock origin, 英语词源]
hen: hen: [OE] Etymologically, a hen is a ‘singing bird’. The word goes back ultimately to a prehistoric Germanic *khanon ‘male fowl, cock’, which was related to the Latin verb canere ‘sing’ (source of English chant). In the West Germanic dialects a feminine form developed, *khannjō, which has become German henne, Dutch hen, Swedish höna, Danish høne, and English hen. (The original masculine form survives in German hahn, Dutch haan, and Swedish and Danish hane, but English has given it up – the Old English word was hana, and if it had survived to the present day it would probably be *hane.) The metaphorical extension of the term to any female bird took place in the 14th century.
=> chant
allopathy (n.): 1842, "treatment of disease by remedies that produce effects opposite to the symptoms," from German Allopathie (Hahnemann), from Greek allos "other" (see alias (adv.)) + -patheia, "suffering, disease, feeling" (see -pathy). The term applied by homeopathists to traditional medicine.
cock (n.2): in various mechanical senses, such as cock of a faucet (early 15c.) is of uncertain connection with cock (n.1), but German has hahn "cock" in many of the same senses. The cock of an old matchlock firearm is 1560s, hence half-cocked (for which see half).
cuckold (n.): mid-13c., kukewald, from Old French cucuault, from cocu (see cuckoo) + pejorative suffix -ault, of Germanic origin. So called from the female bird's alleged habit of changing mates, or her authentic habit of leaving eggs in another bird's nest.

In Modern French the identity is more obvious: Coucou for the bird and cocu for the betrayed husband. German Hahnrei (13c.), from Low German, is of obscure origin. The second element seems to be connected to words for "ardent," and suggests perhaps "sexually aggressive hen," with transferal to humans, but Kluge suggests rather a connection to words for "capon" and "castrated." Related: Cuckoldry.
hen (n.): Old English henn, from West Germanic *hannjo (cognates: Old Frisian henn, Middle Dutch henne, Old High German henna), fem. of *han(e)ni "male fowl, cock" (source of Old English hana "cock"), literally "bird who sings (for sunrise)," from PIE root *kan- "to sing" (see chant).

The original masculine word survives in German (Hahn "cock"), Swedish, Danish, etc. German also has a generic form, Huhn, for either gender of the bird. Extension to "female of any bird species" is early 14c. in English. Hen as slang for "woman" dates from 1620s; hence hen party "gathering of women," first recorded 1887. To be mad as a wet hen is from 1823, but the figure was used to indicate other states:
Some, on the contrary, are viciously opposite to these, who act so tamely and so coldly, that when they ought to be angry, to thunder and lighten, as one may say, they are no fuller of Heat, than a wet Hen, as the Saying is; .... ["Life of Mr. Thomas Betterton," London, 1710]

Orth. Out upon you for a dastardly Fellow; you han't the Courage of a wet Hen. ["A Sermon Preached at St. Mary-le-Bow, March 27, 1704"]
As wanton as a wet hen is in "Scots Proverbs" (1813). Among Middle English proverbial expressions was nice as a nonne hen "over-refined, fastidiously wanton" (c. 1500); to singen so hen in snowe "sing miserably," literally "sing like a hen in snow" (c. 1200). Hen's teeth as a figure of scarceness is attested by 1838.
homeopathy (n.): 1830, from German Homöopathie, coined 1824 by German physician Samuel Friedrich Hahnemann (1755-1843) from Greek homoios "like, similar, of the same kind" (see homeo-) + -patheia (see -pathy).