Dictionary

knucklehead

noun knuck·le·head \-ˌhed\

: a stupid person

Full Definition of KNUCKLEHEAD

:  dumbbell 2
knuck·le·head·ed \-ˌhed-əd\ adjective

Examples of KNUCKLEHEAD

  1. Don't be such a knucklehead.
  2. <I'd like to get my hands on the knucklehead who designed that paper-towel dispenser.>

First Known Use of KNUCKLEHEAD

1942

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