/air"luyn'/ , n.
1. Aeron.
a. a system furnishing air transport, usually scheduled, between specified points.
b. the airplanes, airports, etc., of such a system.
c. Often, airlines . a company that owns or operates such a system.
2. a direct line; beeline.
3. an airhose used to pipe air to a deep-sea diver, pneumatic drill, etc.
adj.
4. of or on an airline.
[ 1910-15; AIR 1 + LINE 1 ]