Meaning : A large knife with one or more folding blades.
Synonyms : clasp knife
Meaning : A dive in which the diver bends to touch the ankles before straightening out.
Meaning : Dive into the water bending the body at the waist at a right angle, like a jackknife.
Jackknife ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Jackknife ka matlab kya hota hai?