Definition of Allen wrench in English:

Allen wrench

(also allen wrench)

Pronunciation /ˈalən ˌrenCH/ /ˈælən ˌrɛntʃ/

Translate Allen wrench into Spanish


Trademark ; US
  • An L-shaped metal bar with a hexagonal head at each end, used to turn bolts and screws having hexagonal sockets.

    British term Allen key


Early 20th century from the name of the manufacturer, the Allen Manufacturing Company, of Hartford, Connecticut.