‖n. pl. See Labium. [ 1913 Webster ]

n. 1. (Phonetics) A letter or character representing an articulation or sound formed or uttered chiefly with the lips, as b, p, w. [ 1913 Webster ]

2. (Mus.) An organ pipe that is furnished with lips; a flue pipe. [ 1913 Webster ]

3. (Zool.) One of the scales which border the mouth of a fish or reptile. [ 1913 Webster ]

a. [ LL. labialis, fr. L. labium lip: cf. F. labial. See Lip. ] 1. Of or pertaining to the lips or labia; as, labial veins. [ 1913 Webster ]

2. (Mus.) Furnished with lips; as, a labial organ pipe. [ 1913 Webster ]

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 &oomacr_; (f&oomacr_;d), ō (ōld), etc., and as eu and u in French, and ö, ü in German. See Guide to Pronunciation, §§ 11, 178. [ 1913 Webster ]

4. (Zool.) Of or pertaining to the labium; as, the labial palpi of insects. See Labium. [ 1913 Webster ]

n. (Phonetics) The quality of being labial; as, the labialism of an articulation; conversion into a labial, as of a sound which is different in another language. J. Peile. [ 1913 Webster ]

n. (Phonetics) The modification of an articulation by contraction of the lip opening. [ 1913 Webster ]

v. t. (Phonetics) To modify by contraction of the lip opening. [ 1913 Webster ]

adv. In a labial manner; with, or by means of, the lips. [ 1913 Webster ]

a. [ NL. labiatus, fr. L. labium lip. ] (Bot.) (a) Having the limb of a tubular corolla or calyx divided into two unequal parts, one projecting over the other like the lips of a mouth, as in the snapdragon, sage, and catnip. (b) Belonging to a natural order of plants (Labiatæ), of which the mint, sage, and catnip are examples. They are mostly aromatic herbs. [ 1913 Webster ]

n. (Bot.) A plant of the order Labiatæ. [ 1913 Webster ]

v. t. To labialize. Brewer. [ 1913 Webster ]