Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The head of a pin.
  • noun Something very small or insignificant.
  • noun Slang A stupid person; a dunce.

from The Century Dictionary.

  • noun The head of a pin; hence, anything very small.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The head of a pin. (Frequently used in size comparisons.)
  • noun slang An ignorant, naïve, foolish, and stupid person.
  • noun slang A telemark skier.
  • noun slang, medicine A human head that is unusually tapered or small, often due to microcephaly, or a person with that trait. Often promoted in freak shows as "human pinheads".
  • noun slang A newborn cricket used as food for pets.

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

  • noun an ignorant or foolish person
  • noun the head of a pin

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

pin + head.

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