- the third molar on each side of the upper and lower jaws: the last tooth to erupt.
- 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
Another writer takes off patches of the diseased tissue, and another a strip of the gum, from wisdom-tooth to wisdom-tooth.
- 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
- 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
- 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.
- 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.