Meaning of labionasal

la•bi•o•na•sal

Pronunciation: (lā"bē-ō-nā'zul), [key]
— Phonet. Phonet.
—adj.
  1. articulated with the lips and given resonance in the nasal cavity, as m.
—n.
  1. a labionasal sound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.