- The definition of a shoulder belt is a restraining device used in cars that goes diagonally across the chest.
An example of a shoulder belt is the top restraining device that is used in a car with a seat belt.
shoulder belt definition by American Heritage Dictionary
See shoulder harness.
Variant of shoulder harness
a restraining device consisting of an anchored strap passing diagonally across the chest, used with a seat belt, as in an automobile
also called shoulder belt