the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one half of the circle; an angle of 180°.
an angle of 180°
An angle having a measure of 180°.
[streyt-ahrm] /ˈstreɪtˌɑrm/ verb (used with object) 1. Football. to push (a potential tackler) away by holding the arm out straight; stiff-arm. 2. to force, push, or fend off by or as if by holding out a stiff arm against obstacles: He straight-armed his way into the middle of the crowded room. noun 3. Football. an […]
- Straight arm lift
noun 1. a wrestling attack, in which a wrestler twists his opponent’s arm against the joint and lifts him by it, often using his shoulder as a fulcrum
noun, Informal. 1. a person who manifests high-minded devotion to clean living and moral righteousness. straight arrow noun 1. (informal, mainly US) a clean-living and honest person (as modifier): a straight-arrow cop straight-ahead
- Straight as an arrow
Honest, genuine, as in You can trust Pat with the money; he’s straight as an arrow. This simile alludes to the arrow’s undeviating flight through the air. [ Second half of 1900s ]