Definify.com
Webster 1913 Edition
Labial
1.
Of or pertaining to the lips or labia;
as,
. labial
veins2.
(Mus.)
Furnished with lips;
as, a
. labial
organ pipe3.
(Phonetics)
(a)
Articulated, as a consonant, mainly by the lips, as b, p, m, w.
(b)
Modified, as a vowel, by contraction of the lip opening, as oō (foōd), ō (ōld), etc., and as eu and u in French, and ö, ü in German. See Guide to Pronunciation, §§ 11, 178.
La′bi-al
,Noun.
1.
(Phonetics)
A letter or character representing an articulation or sound formed or uttered chiefly with the lips, as
b
, p
, w
. 2.
(Mus.)
An organ pipe that is furnished with lips; a flue pipe.
3.
(Zool.)
One of the scales which border the mouth of a fish or reptile.
Webster 1828 Edition
Labial
LA'BIAL
,Adj.
Pertaining to the lips; formed by the lips; as a labial articulation. Thus b, p, and m are labial articulations.
LA'BIAL
,Noun.