1. a large knife with a blade (= cutting edge) that folds into the handle

[TahlilGaran] English Dictionary ▲

1. to form a V-shape. For example if a lorry that is in two parts jackknifes, the driver loses control and the back part moves towards the front part.Topics
   Collocations: Jackknife is used with these nouns as the subject:

   • lorry

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[TahlilGaran] English Dictionary ▲