heavy marks on a coin where the metal was gouged out from coming in contact with something. Typically worse than "contact marks" or "bag marks".

A reduction in the thickness of the container shell. It is an indentation in the shell made by a sharp, chisel-like object. A gouge is characterized by the cutting and complete removal of the container or weld metal along the track of contact.

Nicks and holes in the cover of a book, or in its spine.