La"bi*al (?), a. [LL. labialis, fr. L. labium lip: cf. F. labial. See Lip.]
1.
Of or pertaining to the lips or labia; as, labial veins.
2. Mus.
Furnished with lips; as, a labial organ pipe.
3. 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 &oomac; (f&oomac;d), &omac; (&omac;ld), etc., and as eu and u in French, and o, u in German. See Guide to Pronunciation,
4. Zool.
Of or pertaining to the labium; as, the labial palpi of insects. See Labium.
© Webster 1913.
La"bi*al, n.
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 1913.