Ball joints serve as the pivot points between the tires and suspension. Ball joints also support weight. On some vehicles, the ball joints may be used to make wheel alignment settings. Usefulness: N/A(0 ratings) by Andersen777 () Rate It! this definition is ... useful somewhat useful incorrect spam / offensive

Hip,knee, elbow, shoulder, wrist, head or head joints shaped as part of a ball. Usually found on porcelain or composition dolls.

A flexible joint using a ball and socket type of construction, used in steering linkage setups, steering knuckle pivot supports, etc. Their flexibility helps to compensate for the changes in the wheel and steering when turning or hitting a bump on the road. There are usually upper and lower ball joints attached to the upper and lower A-arms.