The striking of one body against another; collision.

The force or energy of a collision of two objects.

(chiefly medicine) A forced impinging.

(figurative, proscribed) A significant or strong influence or effect.

(transitive) To collide or strike, the act of impinging.

(transitive) To compress; to compact; to press into something or pack together.

(transitive, figurative, proscribed) To significantly or strongly influence or affect; to have an impact on.

(transitive, rare) To stamp or impress onto something.