| air conditioner |
a device that circulates cooled and dehumidified air in a building, car, or other space. |
| air conditioning |
a system that circulates cooled and dehumidified air in a building, car, or other space. |
| aircraft |
any man-made vehicle that can fly through the air, such as an airplane, helicopter, glider, or balloon. |
| aircraft carrier |
a very large warship with a flat upper deck on which airplanes can take off and land. |
| air force |
the aviation branch of a nation's military forces, or one of the units under an air command. |
| airline |
a system of transportation by air offering scheduled flights between various points, or a business that owns and operates the equipment required by such a system. [2 definitions] |
| airliner |
a commercial passenger airplane. |
| airmail |
of, pertaining to, or intended for use with mail sent by air. [5 definitions] |
| airplane |
any of various aircraft that are heavier than air and are driven by propellers or jet engines. |
| airport |
a large area of level land where airplanes can land and take off, usu. including a passenger terminal and cargo and repair facilities. |
| air pressure |
the pressure of compressed air, as in a tire or pump, or the pressure of the earth's atmosphere. |
| airship |
a lighter-than-air aircraft, with its own propulsion system and steering control. |
| airsick |
nauseated because of air travel; suffering from airsickness. |
| airstrip |
an airfield or landing strip, usu. unpaved and without the personnel or equipment of an airport; runway. |
| airtight |
preventing the entrance or exit of air. [2 definitions] |
| airy |
open to the flow of air; breezy. [5 definitions] |
| aisle |
any passageway, as between sections of seats in a theater or sections of shelves in a store. [2 definitions] |
| ajar1 |
partly opened, as a hinged door, window, or lid. |
| AK |
abbreviation of "Alaska," a U.S. state on the northwestern coast of North America between the Bering Strait and Canada. |
| akimbo |
with hand on hip and elbow pointed away from the body. [2 definitions] |
| akin |
related by blood; kin. [2 definitions] |