Peen

[pi:]

(noun.) the part of a hammerhead opposite the flat striking surface (may have various shapes).

Checked by Eli--From WordNet

(n.) A round-edged, or hemispherical, end to the head of a hammer or sledge, used to stretch or bend metal by indentation.

(n.) The sharp-edged end of the head of a mason's hammer.

(v. t.) To draw, bend, or straighten, as metal, by blows with the peen of a hammer or sledge.

Checked by Ernest

n. the end of a hammer-head usually shaped for indenting.—v.t. to strike with such.

Inputed by Liza