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: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: withe: band or rope made of twisted twigs or stems
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: stonechat: common European chat with black plumage and a reddish-brown breast
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: preakness: an annual race for three-year-old horses; held at Pimlico in Baltimore, Maryland
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: dominion: dominance or power through legal authority
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: blue fox: a variety of Arctic fox having a pale grey winter coat
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: bunker: a fortification of earth; mostly or entirely below ground
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: feel: an intuitive awareness;  or
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: worthiness: the quality or state of having merit or value
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: candelilla: wax-coated Mexican shrub related to Euphorbia antisyphilitica
Broader: instrumentality: an artifact (or system of artifacts) that is instrumental in accomplishing some end | Unrelated: saltiness: language or humor that is down-to-earth