In dictionaries:
Douglas A-1 Skyraider
The (formerly designated AD before the 1962 unification of Navy and Air Force designations) an American single-seat attack aircraft in service from 1946 to the early 1980s, which served during the Korean War and Vietnam War.
Canon A-1
an advanced-level single-lens reflex 35 mm film camera for use with interchangeable lenses.
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