jack-knife

名词 n. 动词 v.
中文释义

英文释义

名词 n.
  1. A compact folding knife.
    — He kept a jack-knife in his pocket for various tasks.
  2. The front-dive pike, in which the body folds and unfolds.
    — It took me hundreds of dives to master even the simple jackknife.
  3. An abdominal exercise where knees and torso are raised from a lying position.
  4. A semi-trailer truck accident in which the vehicle mimics the closing of a jack-knife. colloquial
    — I have seen several jack-knives along that dangerous stretch of road.
  5. A game of skill played with a pocket knife in which participants try to throw or flip the knife to stick upright in the ground at specified points or areas.
    — Over at the stable, the men joke and drink whiskey, talk crops and play jack-knife […]
  6. Alternative spelling of jackknife. alt-of,alternative
动词 v.
  1. To fold in the middle, as a jackknife does.
    — The cat jackknifed in the air and landed gracefully on its feet.
  2. To cause a semi-trailer truck to fold like a jackknife in a traffic accident. colloquial
    — Before I knew what was happening, I'd jack-knifed the truck.

词形变化

jack-knives plural jackknife alternative jack-knifes present,singular,third-person jack-knifing participle,present jack-knifed participle,past jack-knifed past jackknife alternative

词汇关系

衍生词
jack-knife barber
相关词
clasp-knife flick knife penknife pocketknife Swiss Army knife switchblade
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