Word Study
aircraft
CIDE DICTIONARY
aircraft, n. sing. & pl.
Any vehicle, such as an airplane, helicopter, balloon, etc., for floating in, or flying through, the air. [Webster 1913 Suppl.]
OXFORD DICTIONARY
aircraft, n. (pl. aircraft) a machine capable of flight, esp. an aeroplane or helicopter.
Idiom
aircraft-carrier a warship that carries and serves as a base for aeroplanes.
For further exploring for "aircraft" in Webster Dictionary Online