wrench

v. pull by force; bend forcefully; twist; hurt by twisting; cut off; distort, pervert

n. violent twist; violent ripping; act of wresting; tool for gripping or turning bolts

A wrench or spanner is a tool used to provide a mechanical advantage in applying torque to turn bolts, nuts or other hard-to-turn items.In American English, wrench is the standard term, while spanner refers to a specialized wrench with a series of pins or tabs around the circumference. (These pins or tabs fit into the holes or notches cut into the object to be turned.) The most common shapes are called open-end wrench and box-end wrench.
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Noun
1. a sharp strain on muscles or ligaments; "the wrench to his knee occurred as he fell"; "he was sidelined with a hamstring pull"
(synonym) twist, pull
(hypernym) injury, hurt, harm, trauma
(hyponym) sprain
(derivation) twist, sprain, turn, wrick, rick
2. a jerky pulling movement
(synonym) twist
(hypernym) movement, motion
3. a hand tool that is used to hold or twist a nut or bolt
(synonym) spanner
(hypernym) hand tool
(hyponym) adjustable wrench, adjustable spanner
(part-meronym) jaw, jaws
(derivation) twist
Verb
1. twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates; "wrench a window off its hinges"; "wrench oneself free from somebody's grip"; "a deep sigh was wrenched from his chest"
(synonym) twist
(hypernym) pull
(derivation) spanner
2. make a sudden twisting motion
(hypernym) writhe, wrestle, wriggle, worm, squirm, twist
(derivation) twist
3. twist and compress, as if in pain or anguish; "Wring one's hand"
(synonym) wring
(hypernym) twist, twine, distort
(verb-group) contort, deform, distort, wring
4. twist suddenly so as to sprain; "wrench one's ankle"; "The wrestler twisted his shoulder"; "the hikers sprained their ankles when they fell"; "I turned my ankle and couldn't walk for several days"
(synonym) twist, sprain, turn, wrick, rick
(hypernym) injure, wound
(derivation) twist, pull

(v. t.)
Trick; deceit; fraud; stratagem.
  

(v. t.)
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.
  

(v. t.)
Means; contrivance.
  

(v. t.)
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.
  

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

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

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

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

A wheel-shaped Wrench that is attached to the Sucker Rod string at the surface and is manually turned to unscrew the string to allow it to be pulled from the Well