Synonyms for rotor blade in the sense of this definition

• rotary wing

(rotor blade is a kind of ...) a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight

• aerofoil
• airfoil
• control surface
• surface

(... is part of rotor blade) rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air

• main rotor