the pilot of an aeroplane or airship; flyer a person who serves in a country's air force 
WordReference Random House Learner's Dictionary of American English © 2025
a•vi•a•tor /ˈeɪviˌeɪtɚ/USA pronunciation  
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- a pilot of an airplane or other heavier-than-air aircraft.
 
a•vi•a•tor 
(ā′vē ā′tər, av′ē-),USA pronunciation n. 
- a pilot of an airplane or other heavier-than-air aircraft.
 
- avi- + -ator, modeled on French aviateur 1885–90
 
Collins Concise English Dictionary © HarperCollins Publishers::
'aviator' also found in these entries (note: many are not synonyms or translations):
-trix
 - Alcock
 - Balbo
 - Batten
 - Bennett
 - Blériot
 - Brown
 - Byrd
 - Cochran
 - Doolittle
 - Earhart
 - Hughes
 - Immelmann
 - Johnson
 - Langley
 - Lilienthal
 - Lindbergh
 - Mitscher
 - Nobile
 - Richthofen
 - Rickenbacker
 - Saint-Exupéry
 - Wilkins
 - Yeager
 - achievement
 - airman
 - aviator glasses
 - aviatrix
 - belly-land
 - birdman
 - bishop
 - flier
 - flyer
 - gomer
 - post
 - skyman