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Webster's English Dictionary

wrench

n. [OE. wrench deceit, AS. wrenc deceit, a twisting; akin to G. rank intrigue, crookedness, renken to bend, twist, and E. wring. 144. See Wring, and cf. Ranch, v. t.] ()

1. Trick; deceit; fraud; stratagem. ()

His wily wrenches thou ne mayst not flee. (Chaucer.)

2. A violent twist, or a pull with twisting. ()

He wringeth them such a wrench. (Skelton.)

The injurious effect upon biographic literature of all such wrenches to the truth, is diffused everywhere. (De Quincey.)

3. A sprain; an injury by twisting, as in a joint. ()

4. Means; contrivance. (Bacon.)

5. An instrument, often a simple bar or lever with jaws or an angular orifice either at the end or between the ends, for exerting a twisting strain, as in turning bolts, nuts, screw taps, etc.; a screw key. Many wrenches have adjustable jaws for grasping nuts, etc., of different sizes. ()

6. (Mech.) The system made up of a force and a couple of forces in a plane perpendicular to that force. Any number of forces acting at any points upon a rigid body may be compounded so as to be equivalent to a wrench. ()

Carriage wrench, a wrench adapted for removing or tightening the nuts that confine the wheels on the axles, or for turning the other nuts or bolts of a carriage or wagon. -- Monkey wrench. See under Monkey. -- Wrench hammer, a wrench with the end shaped so as to admit of being used as a hammer. ()

v. t. [OE. wrenchen, AS. wrencan to deceive, properly, to twist, from wrenc guile, deceit, a twisting. . See Wrench, n.] ()

1. To pull with a twist; to wrest, twist, or force by violence. ()

Wrench his sword from him. (Shak.)

Forthwith this frame of mine was wrenched With a woeful agony. (Coleridge.)

2. To strain; to sprain; hence, to distort; to pervert. ()

You wrenched your foot against a stone. (Swift.)