Definitions for labially
Random House Webster's College Dictionary
la•bi•alˈleɪ bi əl(adj.)
of, pertaining to, or resembling a labium.
of or pertaining to the lips.
(of a speech sound) articulated using one or both lips, as the sounds (p), (v), (m), (w), or (oo).
(n.)a labial speech sound, esp. a consonant.
Origin of labial:
1585–95; < ML
In a labial manner; by means of the lips.
in a labial manner; with, or by means of, the lips