- verb to break by lateral movement
Cars & Driving
- verb to distort or fracture as a result of excess torsion or transverse load
- An internal force tangential to the plane on which it acts. See also shearing force.
- The relative displacement of adjacent planes in a single member.
- To cut metal with two opposing passing blades or with one blade passing a fixed edge.
- The tool used for the operation in definition (3.).
Origin & History of “shear”
Shear is the principal English descendant of the Indo-European base *sker- ‘cut’, which has also produced English score, share, shirt, short, and skirt, and probably sharp and shore as well. A variant of the base without the s is responsible for curt and curtail. The immediate source of shear itself is prehistoric Germanic *skeran, which also evolved into German and Dutch scheren, Swedish skära, and Danish skjære. The verb sheer ‘swerve’ (17th c.) probably originated as a variant of shear, but the adjective sheer (16th c.) is an entirely different word. It probably represents a survival of Old English scīr ‘bright, shining’, which came ultimately from the Germanic base *ski-, source also of English shimmer and shine.