Definition of illegal sometimes disparaging + offensive : a person who enters or lives in a country without the documentation required for legal entry or residence
aerial noun [C]. âº a âstructure made of âmetal ârods or âwires that âreceives or âsends out âradio or âtelevision âsignals.
Full Definition of AIRCRAFT. : a vehicle (as an airplane or balloon) for traveling through the air. See aircraft defined for English-language learners.See aircraft defined for kids. ADVERTISEMENT.lural aircraft. : a vehicle (as an airplane or helicopter) that can travel through the air and that is supported either by its own lightness or by the action of the air against its surfaces.