Meaning of “wedge” - Learner’s Dictionary

wedge

verb [ T ] uk us /wedʒ/
wedge sth open/shut

to use a wedge or similar shaped object to keep a door or window firmly open or closed:

The room was hot so I wedged the door open.

to push something into a narrow space:

I was wedged between Andy and Pete in the back of the car.

(Definition of “wedge verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)