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wisdom tooth

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noun
  1. the third molar on each side of the upper and lower jaws: the last tooth to erupt.
Idioms
  1. cut one's wisdom teeth, to attain maturity or discretion.

Origin of wisdom tooth

First recorded in 1660–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for wisdom tooth

Historical Examples

  • Another writer takes off patches of the diseased tissue, and another a strip of the gum, from wisdom-tooth to wisdom-tooth.

    Scientific American Supplement, No. 358, November 11, 1882

    Various


British Dictionary definitions for wisdom tooth

wisdom tooth

noun
  1. any of the four molar teeth, one at the back of each side of the jaw, that are the last of the permanent teeth to eruptTechnical name: third molar
  2. cut one's wisdom teeth to arrive at the age of discretion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

wisdom tooth in Medicine

wisdom tooth

(wĭzdəm)
n.
  1. The third molar tooth on both sides of each jaw that erupts from the 17th to the 23rd year.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

wisdom tooth in Science

wisdom tooth

[wĭzdəm]
  1. One of four molars, the last on each side of both jaws in humans, usually appearing in young adulthood.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.