jackknife, v.
(jackknifed, jackknifes, jackknifing)
(jackknifed, jackknifes, jackknifing)
dive into the water bending the body at the waist at a right angle, like a jackknife
<verb.motion>
jackknife
verb frames
Somebody ----sSomebody ----s PP
lexical pointers
derivationally related form