英语词源字典 - 在线词源网站

jumbuck [jumbuck 词源字典]: "A sheep", Early 19th century: of unknown origin, possibly Australian pidgin for jump up.[jumbuck etymology, jumbuck origin, 英语词源]
jeweller: "A person or company that makes or sells jewels or jewellery", Middle English: from Old French juelier, from joel (see jewel).
jiao: "A monetary unit of China, equal to one tenth of a yuan", From Chinese jiǎo.
jizz: "(Among birdwatchers and naturalists) the characteristic impression given by a particular species of animal or plant", 1920s: of unknown origin.
job-hop: "To change from one job to another; especially to change job repeatedly", 1950s. From job + hop, after earlier job hopper, job-hopping.
Judas kiss: "An act of betrayal, especially one disguised as a gesture of friendship", Early 15th century: with biblical allusion (Matt. 26:48) to the betrayal of Christ by Judas Iscariot.
jurisconsult: "An expert on law", Early 17th century: from Latin jurisconsultus, from jus, jur- 'law' + consultus 'skilled' (from consulere 'take counsel').
job hopper: "A person who changes from one job to another; especially one who changes job repeatedly", 1940s. From job + hopper. Compare slightly later job-hopping and later job-hop.
job-hopping: "The act or practice of changing from one job to another; especially the practice of changing job repeatedly", 1940s; earliest use found in The Modesto Bee. From job + hopping.
juice bar: "Originally North American , a stall, bar, café, etc., selling freshly squeezed fruit and vegetable juices or similar beverages", 1950s; earliest use found in The New York Times.
jackie hangman: "South African term for fiscal (sense 2 of the noun)", Early 20th century: apparently so named because of the bird's habit of impaling its prey on long sharp thorns.