- a wedgelike, spherical, or other striking end of a hammer head opposite the face.
- to enlarge, straighten, or smooth with a peen.
- to strengthen (a metal surface) by light hammering or by bombardment with steel balls or shot.
- the end of a hammer head opposite the striking face, often rounded or wedge-shaped
- to strike with the peen of a hammer or with a stream of metal shot in order to bend or shape (a sheet of metal)
