aircraft UK /ˈɛə.kɹɑːft/US /ˈɛɚ.kɹæft/ noun2 •a machine such as a plane, usually held up by air pushing on its wings and driven forward by an engineMore than 100 provincial and municipal firefighters were brought in, with helicopters and aircraft used to drop water and fire retardant, while bulldozers were digging firebreaks. — 2016 •One that can carry a person or persons. formsaircrafts