jet 'engine n an engine that pushes out a stream of hot air and gases behind it, used for aircraft → see picture at AIRCRAFT
'jet foil n a boat that rises out of the water on leglike structures when travelling fast; HYDROFOIL
'jet-lag n [U] the tired and confused feeling that people may get after flying to a part of the world where the time is different, e.g. morning when it ought to be bedtime: suffering from jet lag —jet-lagged adj: Thomas was jet-lagged after his ten-hour flight.
jet·lin·er /'dʒetlaɪnər/ n AmE a large aircraft, especially one that carries passengers
jet-pro'pelled adj driven by a JET ENGINE
jet pro'pulsion n [U] the use of JET ENGINES
jet·sam /ˈdʒetsəm/ n [U] things thrown from a ship (and floating towards the shore) ➔ compare FLOTSAM
'jet set n [the+sing./pl. v] infml the international social group of rich, successful, and fashionable people who travel a lot: By marrying a Greek shipping millionaire she gained immediate entry into the jet set. | a jet-set party —jet-setter n: My son's a real jet-setter these days.
'jet-ski n a very small boat in the form of a platform with HANDLEBARS, ridden over water as a form of sport —jet-ski v [1]
Jet·sons, the /ˈdʒetsənz/ a US television CARTOON series from the Hanna Barbera studios, about a space age family named Jetson
'jet stream, the n a current of very strong winds high up above the Earth's surface
jet-ti·son/dzetisən, -zən/v[T] 1 to throw away, especially from a moving vehicle: We had to jettison the cargo to make the plane lighter. 2 to get rid of: If this company is ever to return to profitability, it's got to jettison its outmoded management practices.
jet·ty /'dʒeti/ n a wall or PLATFORM built out into water; used either for getting on and off ships or as a protection against the force of the waves, and usually smaller than a PIER
Jew /dʒuː/ n [C] someone whose religion is Judaism, or who is a member of a group whose traditional religion is Judaism. In ancient times, Jews lived in the land of Israel. Now some live in the modern state of Israel and others live in various countries throughout the world. → see also JEWISH
jewel /ˈdʒuːəl/ n 1 a small piece of decorative and valuable stone, e.g. a diamond or EMERALD; GEM 2 [usually pl.] a decoration that contains one or more of these and is worn on clothes or on the body: She locked her jewels in the safe. → see also CROWN JEWELS 3 a very small real or artificial stone fitted in the machinery of a watch, to make it run smoothly 4 a person or thing of great value: This painting is the jewel of my collection. (=is my finest painting)
jewel in the 'crown, the n the best thing etc among many good ones. It was said in the past that India was the jewel in the crown of the British Empire: His shares in ICI are the jewel in the crown of his portfolio.
Jewel in the Crown, The a British television programme of the 1980s, about British people in India before the country became independent in 1947. It is based on four novels by Paul Scott, one of which is also called The Jewel in the Crown.
jew-elled BrE || jeweled AmE /'dzu:eld/ adj decorated or fitted with jewels: a jewelled bracelet
jew•el•ler BrE || jeweler AmE /'dʒuːələr/ n 1 a person who owns or works in a shop (jeweller's BrE || jeweler's AmE) which sells jewellery, watches etc 2 a maker of jewellery
jew·el·lery BrE ‖ -elry AmE /'d3u:elri/ n [U] body decorations such as rings, NECKLACES etc: This diamond brooch is my most valuable piece of jewellery. | a jewellery box ➔ see also COSTUME JEWELLERY
Jew·ess /ˈdʒuːs/ n [C] old-fashion word meaning a Jewish woman, now usually considered offensive
Jewish /ˈdʒuːʃ/ adj being a Jew, or connected with Jews and their way of life: Ally's husband is Jewish. | an old Jewish custom
Jew·ry /'dʒuːri/ n [U] old use the Jewish people
'Jew's 'harp //'. /n a musical instrument which consists of a small metal frame that you hold between your teeth, and which you play by striking a piece of metal in the centre of the frame with one finger and changing the shape of your mouth
Jez-ebel /'dzejebəl,-bel/ n lit or humor an immoral woman who deliberately tries to attract men sexually
JFK /ˌdʒɛɪˈfɛk/ ☐ abbrɛv. for ☐ John Fitzgerald KENNEDY 2 New York's main international airport, named after this President: She's flying into JFK on Saturday.
Jiang Qing / dҙaṇ 'tʃin/ (1913–91) a Chinese politician and the third wife of MAO ZEDONG. She had extreme LEFT-WING views.
Jiang Ze·min /,d3æŋ dz3: 'min/ (1926-) a Chinese politician who was leader of China and the Communist Party from 1997 to 2002
jib $ ^{1} $ /d3ib/ n a long beam which stands out from a CRANE, and from which the hook hangs down
jib² n a small sail → see also the cut of someone's jib (CUT²)
jib³ v -bb- [1(at)] BrE to become suddenly unwilling to go further; HESITATE: He jibbed a bit when I told him the price, but eventually he agreed. | She jibbed at signing the contract without legal advice.
jibe /dʒaɪb/ n, v GIBE
Jif /dʒɪf/ trademark 1. a type of PEANUT BUTTER sold in the US 2 also Jif lemon a type of LEMON juice sold in the UK in a plastic container that has the shape of a lemon 3 the former name of Cif
jif·fy /ˈdʒɪfi/ n [S] infml a moment: I'll be ready in a jiffy. (=I'll be ready very soon)
'Jiffy bag, jiffy bag BrE trademark a thick soft envelope, used for posting things that might break
jiỆg¹ /d31g/ n (music for) a quick merry dance
$ jig^{2} v -gg - 1 [1] $ to dance a jig 2  $ [1 + adv/prep; T + obj + adv/prep] $ to (cause to) move up and down with quick short movements: They were jigging up and down in time to the music.
jig·ger /'dʒɪɡər/ n 1 a small usually metal cup used in measuring alcoholic drinks 2 rare especially AmE any small piece of apparatus: Where's that jigger I fix the radio with?
jig·gered /ˈdʒɪɡədəl/ adj [F] infml 1 very surprised: Well, I'll be jiggered! (=I am very surprised) 2 old-fashioned: I'm completely jiggered after that game of football.
jig·ger·y-po·ker·y /,d3igəri 'pəukəri/ n [U] infml, especially BrE secret dishonest behaviour: By the look of these election results, there's been some jiggery-pokery.
jig·gle /ˈdʒɪɡəl/ v [l;t] infml to (cause to) move from side to side with short quick light movements: Jiggle the key in the lock and see if it will open the door. —jiggle n
jig·saw /ˈdʒɪɡsɔːl/ n 1 also
jigsaw, puzzle a picture cut up into many small pieces to be fitted together: to do a jigsaw | (fig.) The police have found a vital clue to the murder, and hope that the other pieces of the jigsaw will now fall into place. (=so that the rest of the mystery will be explained) 2 a SAW for cutting out shapes in thin pieces of wood
ji·had /dʒɪˈhɑːd, dʒɪˈhæd/ n a holy war fought by Muslims when an Islamic nation is under attack
jigsaw
jilt /dʒɪlt/ v [T] derog to suddenly refuse to see (a lover) any more; unexpectedly refuse to marry (someone) after having promised to do so
Jim Crow /,dʒɪm 'krəʊ/ adj [A] AmE 1 unfair to African Americans: blacks who had fallen victim to Jim Crow justice 2 for African Americans only, and usually of poor quality: a Jim Crow court
jim·jams /ˈdʒɪmdʒæmz/ n 1 [P] BrE infml PYJAMAS 2 [the+P] BrE humor slang the JITTERS
jim·my /'dʒuːmi/ n AmE for JEMMY
Jimmy used informally by Scottish men, especially men