Term: tail rotor: rotor consisting of a rotating airfoil on the tail of a single-rotor helicopter; keeps the helicopter from spinning in the direction opposite to the rotation of the main rotor
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: benzofuran: a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: walleye: pike-like freshwater perches
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: ichthyolatry: the worship of fish
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: seafront: the waterfront of a seaside town
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: security: measures taken as a precaution against theft or espionage or sabotage etc.
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: ylem: (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: awkwardness: unskillfulness resulting from a lack of training
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: warble: a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: perfectionism: a disposition to feel that anything less than perfect is unacceptable
Broader: mechanism: device consisting of a piece of machinery; has moving parts that perform some function | Unrelated: hang: a gymnastic exercise performed on the rings or horizontal bar or parallel bars when the gymnast's weight is supported by the arms