from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A hex head wrench.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a wrench for Allen screws


Allen, the name of Allen Manufacturing Company, and wrench. (Wiktionary)


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  • The Allen wrench trademark was taken out in 1943 by the Allen Manufacturing Company of Hartford, Connecticut.

    March 26, 2011