L

adj. Of or pertaining to the lips or labia; as, labial veins. (Mus.) Furnished with lips; as, a labial organ pipe. (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; o etc., and as eu and u in French, and o, ü in German. (Zool.) Of or pertaining to the labium; as, the labial palpi of insects. See Labium.

 - n. (Phonetics) A letter or character representing an articulation or sound formed or uttered chiefly with the lips, as b, p, ...