knothead(redirected from knot head)
slang A stupid, foolish, or incompetent person. I'll never understand why they put that knothead in charge of the project. Terry, you knothead! You put the ink cartridges in backward!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a stupid person. Don’t be such a knothead!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.