What is Upper airway?
Upper airway definition and meaning on Dictionary terms:
adjective Also upmost.
highest in place, order, rank, power, etc.: the uppermost peaks of the mountain; the uppermost class of society.
topmost; predominant: a subject of uppermost concern.
in or into the uppermost place, rank, or predominance: The blossoms grow uppermost on the stems of these flowers; the thoughts that came uppermost to her mind.