1 of 2


peened; peening; peens

transitive verb

: to draw, bend, or flatten by or as if by hammering with a peen


2 of 2


: a usually hemispherical or wedge-shaped end of the head of a hammer that is opposite the face and is used especially for bending, shaping, or cutting the material struck

Example Sentences

Recent Examples on the Web
Read more about this year’s trends — including, yes, the popular peen — here. Michael Schneider, Variety, 27 June 2022 There are various types, including ball-peen, sledge and mallet, but the 16-ounce claw hammer, which has a head that is split and curved on one side, should handle most jobs and isn’t too heavy to wield. Laura Daily, Washington Post, 24 May 2022 The Caylors host their knife-making classes in a backyard garage built just for the program, a noisy workshop with ball-peen hammers hanging on the walls and blacksmith anvils sitting on cut tree stumps. René A. Guzman, San Antonio Express-News, 18 Jan. 2022 The two heads of this hammer (a flat head and a round head, known as the pein or peen) are stronger than a claw hammer to withstand and shape metal surfaces. Popular Science, 15 Mar. 2020 Fold forming is a process in which the metal is heated and then is bent into designs by creasing it with a ball peen hammer. Lyndi Mcnulty,, 6 Nov. 2019 This is not a show content to use a ball peen hammer for precision chiseling when a sledgehammer is available to reduce points to a fine powder. Daniel Fienberg, The Hollywood Reporter, 9 May 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'peen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History



probably of Scandinavian origin; akin to Norwegian penn peen

First Known Use


circa 1522, in the meaning defined above


1683, in the meaning defined above

Time Traveler
The first known use of peen was circa 1522

Dictionary Entries Near peen

Cite this Entry

“Peen.” Dictionary, Merriam-Webster, Accessed 9 Dec. 2022.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
Spell It

Hear a word and type it out. How many can you get right?

Universal Daily Crossword

A daily challenge for crossword fanatics.