labial

adjective

1. of, relating to, or resembling a labium.
2. of or relating to the lips.
3. Phonetics. involving lip articulation, as p, v, m, w, or a rounded vowel.
4. Music. having the tones produced by the impact of a stream of air on a sharp liplike edge, as in a flute or the flue pipes of an organ.

noun Phonetics.

5. any labial consonant, especially a bilabial.
6. any labial sound.

adjective

1. of, relating to, or near lips or labia
2. music producing sounds by the action of an air stream over a narrow liplike fissure, as in a flue pipe of an organ
3. phonetics relating to a speech sound whose articulation involves movement or use of the lipsa labial click

noun

4. Also called: labial pipe music an organ pipe with a liplike fissure
5. phonetics a speech sound such as English p or m, whose articulation involves movement or use of the lips

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 “a labial sound” is from 1660s. Related: Labially. adj.

1. Relating to the lips or labia.