from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Simultaneously labial and velar, as (kw) in quick.
- noun A labiovelar sound.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun phonetics a
velar soundarticulated with lip-rounding, i.e. labialization
Sorry, no etymologies found.
We certainly see evidence of labialization from Pre-IE in the labiovelar series.
But in fact, this idea provides a perfect motive for the merger of labiovelar *kʷ with the newly fronted plain velar *k of PIIr