英语词源字典 - 在线词源网站

Jim Crow [Jim Crow 词源字典]: "black person," 1838, American English, originally the name of a black minstrel character in a popular song-and-dance act by T.D. Rice (1808-1860) that debuted 1828 and attained national popularity by 1832:
Wheel about, an' turn about, an' do jis so;
Eb'ry time I wheel about, I jump Jim Crow.
Where and how Rice got it, or wrote it, is a mystery. Even before that, crow (n.) had been a derogatory term for a black man. Association with segregation dates from 1842, in reference to a railroad car for blacks. Modern use as a type of racial discrimination is from 1943. In mid-19c., Jim Crow also could be a reference to someone's change of (political) principles (from the "jump" in the song).[Jim Crow etymology, Jim Crow origin, 英语词源]
jim-dandy (n.): "remarkable person or thing," 1844, perhaps from an old song, "Dandy Jim of Caroline" (1840s).
jiminy: exclamation of surprise, 1803, a disguised oath, perhaps for Jesu Domine "Jesus Lord." Extended form jiminy cricket is attested from 1848 and suggests Jesus Christ (compare also Jiminy Christmas, 1890).
jimmies (n.): bits of candy as ice cream topping, by 1963, American English.
jimmy (n.): "burglar's crowbar," 1848, variant of jemmy, name for a type of crowbar much used by burglars, special use of Jemmy, familiar form of proper name James (also see jack).
jimmy (v.): 1893, from jimmy (n.). Related: Jimmied; jimmying.
jimson weed (n.): also jimsonweed, 1812, American English, shortening of Jamestown-weed (1680s), from Jamestown, Virginia colony, where it was discovered by Europeans (1676), when British soldiers mistook it for an edible plant and subsequently hallucinated for 11 days.
jim-jams (1): "A fit of depression or nervousness", Mid 16th century (originally denoting a small article or knick-knack): fanciful reduplication. The current sense dates from the late 19th century.
jim-jams (2): "Pyjamas", Early 20th century: abbreviation of pie-jim-jams, alteration of pyjamas.