common burrowing rodent mammal, noted for prolific breeding, late 14c., rabet, "young of the coney," suspected to be from Walloon robète or a similar northern French dialect word, a diminutive of Flemish or Middle Dutch robbe "rabbit," which are of unknown origin. "A Germanic noun with a French suffix" [Liberman]. The adult was a coney (q.v.) until 18c.
Zoologically speaking, there are no native rabbits in the United States; they are all hares. But the early colonists, for some unknown reason, dropped the word hare out of their vocabulary, and it is rarely heard in American speech to this day. When it appears it is almost always applied to the so-called Belgian hare, which, curiously enough, is not a hare at all, but a true rabbit. [Mencken, "The American Language"]
Rabbit punch "chop on the back of the neck" (1915) is so called from resemblance to a gamekeeper's method of dispatching an injured rabbit. Pulling rabbits from a hat as a conjurer's trick recorded by 1843. Rabbit's foot "good luck charm" is attested by 1879 in U.S. Southern black culture. Earlier references are to its use as a tool to apply cosmetic powders.
[N]ear one of them was the dressing-room of the principal danseuse of the establishment, who was at the time of the rising of the curtain consulting a mirror in regard to the effect produced by the application of a rouge-laden rabbit's foot to her cheeks, and whose toilet we must remark, passim, was not entirely completed. [New York Musical Review and Gazette, Nov. 29, 1856]
Rabbit-hole is by 1705. Rabbit ears "dipole television antenna" is from 1950. Grose's 1785 "Dictionary of the Vulgar Tongue" has "RABBIT CATCHER. A midwife."
also cony, "rabbit," c. 1200, abstracted from Anglo-French conis, Old French coniz, plurals of conil "long-eared rabbit" (Lepus cunicula) from Latin cuniculus (source of Spanish conejo, Portuguese coelho, Italian coniglio), the small, Spanish variant of the Italian hare (Latin lepus). The word perhaps is from Iberian Celtic (classical writers say it is Hispanic).
Middle English had two forms: cony, conny, also coning, cunin, conyng; Old French had conil alongside conin. Apparently the plural form conis (from conil, with the -l- elided) was taken into English and regularly single-ized as cony. The Old French form in -n was borrowed in Dutch (konijn) and German (Kaninchen, a diminutive), and is preserved in the surname Cunningham (from a place-name in Ayrshire). Rabbits not being native to northern Europe, there was no Germanic word for them.
Rabbit arose 14c. to mean the young of the species, but gradually pushed out the older word 19c., after British slang picked up coney as a punning synonym for cunny "cunt" (compare connyfogle "to deceive (a woman) in order to win sexual favors"). The word was in the King James Bible (Proverbs xxx.26, etc.), however, so it couldn't be entirely dropped, and the solution was to change the pronunciation of the original short vowel (rhyming with honey, money) to rhyme with bony, stony. In the Old Testament, the word translates Hebrew shaphan "rock-badger."
Association with "cheating" is from coney-catcher, "A term made famous by [Robert] Greene in 1591, and in great vogue for 60 years after" [OED]
CONY-CATCHER. A sharper, or cheat. Minshew has well expressed the origin of the term: A conie-catcher, a name given to deceivers, by a metaphor, taken from those that rob warrens, and conie-grounds, using all means, sleights, and cunning to deceive them, as pitching of haies before their holes, fetching them in by tumblers, &c. [Nares, "Glossary"]
Also 16c.-17c. a term of endearment for a woman. Coney-wool (1714) "fur of rabbits" formerly was much used in making hats, etc. Coney-hole "rabbit hole" is from mid-15c.
1785, an absurd perversion of (Welsh) rabbit, as if from rare (adj.) + bit (n.). See Welsh.
small, rabbit-like animal of the alpine regions of Siberia and western North America, 1827, from Tunguse piika.
"gonorrhea," 1580s, of unknown origin, perhaps from Middle English clapper "rabbit-hole," from Old French clapoire (Modern French clapier), originally "rabbit burrow" (a word of uncertain origin), given a slang extension to "brothel" and also the name of a disease of some sort. In English originally also a verb, "to infect with clap." Related: Clap-doctor.