main rotor main road • main street · · · Info · Definitions · Characters · · main rotor · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air. Synonyms: main rotor. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074