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1. Oxford American Dictionary

   crack

   • IPA[krak]

   美式

   • n.
     a line on the surface of something along which it has split without breaking into separate parts；a narrow space between two surfaces, especially ones that have broken or been moved apart
   • v.
     break or cause to break without a complete separation of the parts；break or cause to break open or apart
   • adj.
     very good, especially at a specified activity or in a specified role

   • verb: crack, 3rd person present: cracks, gerund or present participle: cracking, past tense: cracked, past participle: cracked

   • noun: crack, plural noun: cracks

2. • 釋義
   • 片語

   n.

   名詞

   • 1. a line on the surface of something along which it has split without breaking into separate parts a hairline crack down the middle of the glass 同義詞 split, fissure, crevice, break, fracture, ... 更多rupture, breach, rift, cleft, slit, chink, gap, cranny, interstice, rarecrazing
   • ▪ a narrow space between two surfaces, especially ones that have broken or been moved apart he climbed into a crack between two rocks the door opened a tiny crack 同義詞 split, fissure, crevice, break, fracture, ... 更多rupture, breach, rift, cleft, slit, chink, gap, cranny, interstice, rarecrazing
   • ▪ a vulnerable point; a flaw the company spotted a crack in their rival's defenses
   • ▪ informal the cleft between the buttocks your butt crack should not be visible when you squat I've got sand in my crack. I don't know how that's even possible
   • 2. a sudden sharp or explosive noise a loud crack of thunder 同義詞 bang, report, explosion, detonation, clap, ... 更多pop, snap, crackle, knock, tap, clash, crash, smash, smack, informalwham, whump
   • ▪ a sharp blow, especially one that makes a noise she gave the thief a crack over the head with her rolling pin 同義詞 blow, bang, hit, punch, knock, ... 更多thump, rap, bump, thwack, smack, slap, welt, cuff, box, informalbash, whack, clobber, clout, clip, wallop, belt, tan, biff, bop, sock, lam, whomp, slosh, boff, bust, slug, whale, dong, datedbuffet
   • ▪ a sudden harshness or change in pitch in a person's voice the boy's voice had an uncertain crack in it
   • 3. informal a joke, typically a critical or unkind one he knew about the gossip and would make the odd crack 同義詞 joke, witticism, funny remark, witty remark, jest, ... 更多quip, pun, sally, pleasantry, epigram, aphorism, repartee, banter, bon mot, jibe, barb, jeer, sneer, taunt, insult, cutting remark, slight, affront, slur, insinuation, informalone-liner, gag, wisecrack, funny, dig
   • 4. Irish enjoyable social activity; a good time he loved the crack, the laughing
   • ▪ Scottish, Northern English a conversation they are having a great crack about shooting
   • 5. informal an attempt to gain or achieve something I thought I had a crack at winning 同義詞 attempt, try, effort, endeavor, venture, ... 更多informalgo, shot, stab, whack, whirl, formalessay, archaicassay
   • ▪ a chance to attack or compete with someone he wanted to have a crack at the enemy
   • 6. a hard, crystalline form of cocaine broken into small pieces and smoked he uses crack and cocaine a crack dealer

   v.

   動詞

   • 1. break or cause to break without a complete separation of the parts the ice all over the lake had cracked a stone cracked the headlight glass on his car 同義詞 split, fracture, fissure, rupture, break, ... 更多snap, cleave, rarecraze
   • ▪ break or cause to break open or apart his face cracked into a smile she cracked an egg into the frying pan
   • ▪ break (wheat or corn) into coarse pieces.
   • ▪ open slightly gingerly, he cracks open his door
   • ▪ give way or cause to give way under torture, pressure, or strain the witnesses cracked and the truth came out no one can crack them—they believe their story 同義詞 break down, give way, cave in, crumble, collapse, ... 更多go to pieces, lose control, yield, succumb, founder, informalfall/come apart at the seams
   • 2. make or cause to make a sudden sharp or explosive sound a shot cracked across the ridge he cracked his whip and galloped away 同義詞 go bang, bang, pop, snap, crackle, ... 更多crash, thud, thump, boom, ring out, clap, explode, detonate
   • ▪ knock against something, making a noise on impact she winced as her knees cracked against metal
   • ▪ hit (someone or something) hard, making a sharp noise she cracked him across the forehead 同義詞 hit, strike, beat, thump, hammer, ... 更多knock, rap, pound, thud, punch, bump, thwack, smack, slap, slam, welt, cuff, pummel, buffet, box someone's ears, informalbash, whack, clobber, clout, clip, wallop, belt, tan, biff, bop, sock, lam, whomp, slosh, boff, bust, slug, whale, dong
   • ▪ (of a person's voice, especially that of an adolescent boy or a person under strain) suddenly change in pitch “I want to get away,” she said, her voice cracking
   • 3. informal find a solution to; decipher or interpret a hacker cracked the codes used in internet software 同義詞 solve, find an/the answer to, find a/the solution to, resolve, work out, ... 更多puzzle out, fathom, find the key to, decipher, decode, break, clear up, interpret, translate, straighten out, get to the bottom of, make head or tail of, unravel, disentangle, untangle, unfold, piece together, elucidate, informalfigure out, suss out
   • ▪ break into (a safe).
   • 4. tell (a joke) he cracked jokes which she didn't find very funny
   • 5. decompose (hydrocarbons) by heat and pressure with or without a catalyst to produce lighter hydrocarbons, especially in oil refining catalytic cracking

   adj.

   形容詞

   • 1. very good, especially at a specified activity or in a specified role he is a crack shot crack troops

   片語

   • crack a book
   • crack of dawn
   • crack of doom
   • crack open a bottle
   • be cracked up to be
   • crack wise
   • fall through the cracks
   • get cracking
   • crack down on
   • crack on
   • crack up