bash in

Verb

 * 1)  To break or dent badly by hitting violently.
 * We got home to find that someone had bashed in the door.
 * 1)  To injure (someone) with violent blows.
 * Careful, or I'll bash your face in!

Usage notes

 * In all senses the object may appear before or after the particle. If the object is a pronoun, then it must be before the particle.