1a sudden violent twist or pull:with a wrench Tony wriggled free
2a feeling of sadness or distress caused by one’s own or another’s departure:it will be a real wrench to leave after eight years
3an adjustable tool like a spanner, used for gripping and turning nuts or bolts:you will need a wrench to tighten it in position
4 Mechanics a combination of a couple with a force along its axis.
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Universal
1pull or twist suddenly and violently:Casey grabbed the gun and wrenched it from my hand [with object and complement]:she wrenched herself free of his grip
injure (a part of the body) as a result of a sudden twisting movement:she slipped and wrenched her ankle
archaic distort to fit a particular theory or interpretation:to wrench our Bible to make it fit a misconception of facts
2turn (something, especially a nut or bolt) with a wrench.