Definition of airstair
: a built-in or movable set of stairs that is used to allow people to enter and exit an aircraft —often plural The plate acted like a gate latch, preventing the airstairs from being lowered in flight. — Steve Martini, The Rule of Nine, 2010
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of airstair
Seen and Heard
What made you want to look up airstair? Please tell us where you read or heard it (including the quote, if possible).