(military) Anti-aircraft artillery. / (military) An anti-aircraft artillery organization. / (military) Anti-aircraft fire.

Alternative spelling of hot-air balloon

(literally) Air that has been heated, especially so as to function as the lifting agent of a hot-air balloon. / (idiomatic) Empty, confused, or exaggerated talk lacking meaning or substance; bluster.

A balloon-shaped aircraft whose bag is inflated with hot air; it carries passengers and crew in a gondola slung underneath.

Vehicle suspension in which compressed air is used as a spring.

A sealed, airtight chamber, such as in a manned spacecraft or submarine, used to provide access to and from the sealed area without allowing air out or water in.

A pilot of an aircraft. / A member of an air force. / A person of a rank in the U.S. Air Force above airman basic and below airman first class.

A mattress that is inflated with air, and used as a temporary or permanent bed.

A bed that is inflated with air and used as a permanent or temporary bed. They are adjustable, and sometimes portable.

(dialectal or informal) Am not. / (dialectal or informal) Are not, aren’t; is not, isn’t; am not. / (dialectal or informal) Have not, haven’t; has not, hasn’t, when used as an auxiliary.