1. To insert something by shoving, thrusting, or pressing it. A noun or pronoun can be used between "push" and "in." You'll need to push the module in if you want to reroute power through the system. Push in the key and turn it to start the car.

2. To make something move, crumple, or cave inward by shoving, thrusting, or pressing on it. A noun or pronoun can be used between "push" and "in." Tom pushed in the door and asked if anyone was home. Don't push that in—you'll ruin the packaging!

3. To move someone or something into something or some place by shoving, thrusting, or pressing on them or it. A noun or pronoun is used between "push" and "in." He pushed me in the house and shut the door behind us. I was just pushing this in the closet to get it out of the way.