Spring definition
A device on the suspension system to cushion and absorb shocks and bumps and to keep the vehicle level on turns. After the stress or pressure exerted by the flexing of the spring has been removed, the spring returns to its original state. The spring does this by first absorbing and then releasing a certain amount of energy. The form of spring may be leaf springs , coil springs , torsion bars , or a combination of these. See ball and spring , compression spring , diaphragm spring , extension spring , flat spring , longitudinal leaf spring , semi-elliptic spring , transverse leaf spring , and valve spring .