Definitions

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

  • n. One of four rearmost molars on each side of the upper and lower jaw in humans. Wisdom teeth are the last teeth to erupt, typically in early adulthood.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the four (one upper and one lower on each side) rearmost molars in humans, which typically develop between ages 18-24.

from the GNU version of the Collaborative International Dictionary of English

  • n. the last, or back, tooth of the full set on each half of each jaw in man; -- familiarly so called, because appearing comparatively late, after the person may be supposed to have arrived at the age of wisdom. See the Note under Tooth, 1.

from The Century Dictionary and Cyclopedia

  • n. The last molar tooth on either side of each jaw.

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

  • n. any of the last 4 teeth on each side of the upper and lower jaw; the last of the permanent teeth to erupt (between ages 16 and 21)

Etymologies

Translation of New Latin dēns sapientiae : dēns, tooth + sapientiae, genitive of sapientia, wisdom.
(American Heritage® Dictionary of the English Language, Fourth Edition)
A calque of Latin dēns sapientiae. (Wiktionary)

Examples

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