Found 2 items, similar to main rotor.
English → English (WordNet) Definition: main rotor main rotor n : rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air
English → English (gcide) Definition: main rotor main rotor \main rotor\ n. (Aviation) The assembly of large rotating airfoils (blades) on a helicopter that produce the lift to support the helicopter in the air. [WordNet 1.5]