JACKKNIFE (jackknives)

Pronunciation (US):

(GB):

Irregular inflected form: jackknives   

 Dictionary entry overview: What does jackknife mean? 

• JACKKNIFE (noun)
  The noun JACKKNIFE has 2 senses:

1. a large knife with one or more folding blades

2. a dive in which the diver bends to touch the ankles before straightening out

  Familiarity information: JACKKNIFE used as a noun is rare.

• JACKKNIFE (verb)
  The verb JACKKNIFE has 1 sense:

1. dive into the water bending the body at the waist at a right angle, like a jackknife

  Familiarity information: JACKKNIFE used as a verb is very rare.

 Dictionary entry details 

• JACKKNIFE (noun)

Sense 1

Meaning:

A large knife with one or more folding blades

Classified under:

Nouns denoting man-made objects

Synonyms:

clasp knife; jackknife

Hypernyms ("jackknife" is a kind of...):

pocket knife; pocketknife (a knife with a blade that folds into the handle; suitable for carrying in the pocket)

Sense 2

Meaning:

A dive in which the diver bends to touch the ankles before straightening out

Classified under:

Nouns denoting acts or actions

Hypernyms ("jackknife" is a kind of...):

dive; diving (a headlong plunge into water)

Derivation:

jackknife (dive into the water bending the body at the waist at a right angle, like a jackknife)

• JACKKNIFE (verb)

Present simple: I / you / we / they jackknife    ... he / she / it jackknifes   
Past simple: jackknifed   
Past participle: jackknifed   
-ing form: jackknifing   

Sense 1

Meaning:

Dive into the water bending the body at the waist at a right angle, like a jackknife

Classified under:

Verbs of walking, flying, swimming

Hypernyms (to "jackknife" is one way to...):

dive (plunge into water)

Domain category:

athletics; sport (an active diversion requiring physical exertion and competition)

Sentence frames:

Somebody ----s
Somebody ----s PP

Derivation:

jackknife (a dive in which the diver bends to touch the ankles before straightening out)