from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Slang A person regarded as strange, eccentric, or crazy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an eccentric, strange or crazy person; a weirdo.
  • n. A board sport participant who has poor style or skill.

from The Century Dictionary and Cyclopedia

  • See cook.

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

  • n. someone regarded as eccentric or crazy and standing out from a group


Possibly from cuckoo.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Possibly from cuckoo. (Wiktionary)



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  • a strange duck?!?!

    March 17, 2012

  • person of strange behavior/ sentence- He's a real kook about cleanliness.(Newbury House Dictionary)

    September 25, 2010