1 [transitive always + adverb/preposition]
to twist and pull something roughly from the place where it is being held:
I wrenched the packet from his grasp.
The door had been wrenched open.
to use your strength to pull yourself away from someone who is holding you:
She managed to wrench herself free.
to hurt a joint in your body by twisting it [= sprain]:
I think I've wrenched my knee.