khí-gûn-kun齒齦根

root of the tooth

root of the tooth; base of the tooth

anatomy

English Wiktionary, “齒齦根” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%BD%92%E9%BD%A6%E6%A0%B9 · confidence: Medium (Wiktionary)