- labial
[labial 词源字典]
- labial: see lip
[labial etymology, labial origin, 英语词源] - labial (adj.)
- "pertaining to the lips," 1590s, from Medieval Latin labialis "having to do with the lips," from Latin labium "lip" (see lip (n.)). The noun meaning âa labial soundâ is from 1660s. Related: Labially.