iù-khí幼齒

baby tooth

baby tooth; minor; kiddie; inexperienced person; underaged prostitute; young; inexperienced; immature

colloquial

English Wiktionary, “幼齒” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%B9%BC%E9%BD%92 · confidence: Medium (Wiktionary)