Overview of noun jackknife

The noun jackknife has 2 senses

• clasp knife, jackknife -- (a large knife with one or more folding blades)


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

Overview of verb jackknife

The verb jackknife has 1 sense

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