[ peen ]
/ pin /


a wedgelike, spherical, or other striking end of a hammer head opposite the face.

verb (used with object)

to enlarge, straighten, or smooth with a peen.
to strengthen (a metal surface) by light hammering or by bombardment with steel balls or shot.

Origin of peen

1505–15; earlier pen < Scandinavian; compare Swedish, Norwegian pen (noun) in same sense (perhaps < German Pinne peen). See pin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for peen

British Dictionary definitions for peen

/ (piːn) /


the end of a hammer head opposite the striking face, often rounded or wedge-shaped


(tr) 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)

Word Origin for peen

C17: variant of pane, perhaps from French panne, ultimately from Latin pinna point
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012