অর্থ : A large knife with one or more folding blades.
সমার্থক : clasp knife
অর্থ : A dive in which the diver bends to touch the ankles before straightening out.
অর্থ : Dive into the water bending the body at the waist at a right angle, like a jackknife.
Jackknife meaning in Bengali (Bangla).