Other forms: airstairs
An airstair is the steps rolled up to an aircraft door. Wheel up the airstair.
Some aircraft carry their own built into the door, which lets them use airports with nothing. An airstair in wind and rain is the reason everybody prefers a jetty.
1nounairstairThe steps rolled up to an aircraft door.
“The airstair was pushed up by two people in the rain.”
airstair is steps.
Air plus stair; the built-in kind was developed so aircraft could serve airfields with no ground equipment.
From air + stair.
Etymology from Wiktionary, CC BY-SA