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 erupt
Technical name: third molar- cut one's wisdom teeth ⇒
to arrive at the age of discretion
WordReference Random House Learner's Dictionary of American English © 2026
ˈwis•dom ˌtooth, n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Dentistrythe third molar, a tooth in the back of the mouth, on each side of the upper and lower jaws.
wis′dom tooth′,
- Dentistrythe 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.
- 1660–70
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