Rare, archaic or highly literary term for a talkative person. Not used in modern everyday speech.
The mental nerve innervates the lower lip and the chin region.
We checked the location of the mental foramen in anatomy class.
In old language, 'otogai' could refer to a chatterbox.
Katakana spelling used in medical or anatomical contexts.
The origin is uncertain. The kanji 頤 is a Chinese character meaning chin or jaw, adopted for this word.