Definitions for

Overview of noun jackknife

The noun jackknife has 2 senses? (no senses from tagged texts)
1. clasp knife, jackknife

(a large knife with one or more folding blades)

2. jackknife

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

Overview of verb jackknife

The verb jackknife has 1 senses? (no senses from tagged texts)
1. jackknife

(dive into the water bending the body at the waist at a right angle, like a jackknife) © 2001-2013, Demand Media, all rights reserved. The database is based on Word Net a lexical database for the English language. see disclaimer
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