jackknife
Concise Oxford English Dictionary © 2008 Oxford University Press:
jackknife/ˈʤaknʌɪf/
▶noun (pl. jackknives)
- 1 a large knife with a folding blade.
- 2 a dive in which the body is bent at the waist and then straightened.
- 1 move (one's body) into a bent or doubled-up position.
■ (of a diver) perform a jackknife.
- 2 (of an articulated vehicle) bend into a V-shape in an uncontrolled skidding movement.
'jackknife' also found in these Oxford entries:
