| 释义 | 
		la·bi·al I. \ˈlābēəl\ adjective Etymology: Medieval Latin labialis, from Latin labium lip + -alis -al — more at lip 1.  : of or relating to the lips or labia  < a labial gland >  < a labial scale > 2.  : giving its tones from impact of an air current on a lip or liplike edge  < a labial instrument like the flute > 3.  : produced with the participation of one or both lips — used of consonants (as \f\, \v\, \p\, \b\) and of rounded vowels (as \ü\) and semivowels (as \w\); compare bilabial, labiodental II. noun (-s) 1.  : flue pipe 2.  : a labial consonant 3.  : one of the small scales that border the lips of most snakes and many other reptiles |