break in

verb

To enter a place by force or illicit means.
“Someone broke in and stole his radio.”
“Thousands gathered at São Paulo’s main cathedral and made their way to the mayor’s office, where a small group smashed windows and tried to break in, forcing guards to withdraw.”
To smash (something) by forcing it inward.
“Break in the door. We are held up!”
To reach a state of functioning more smoothly through use or wear; to cause (something, or someone, new) to undergo this change.
“These shoes will be more comfortable after they have broken in.”
“These shoes will be more comfortable after I have broken them in.”
Starting something brand new or at a new level.
“He broke in with the New York Yankees.”
To tame; make obedient; to train to follow orders of the owner.
“Captain had been broken in and trained for an army horse; his first owner was an officer of cavalry going out to the Crimean War. He said he quite enjoyed the training with all the other horses, trotting together, turning together, to the right hand or to the left, halting at the word of command, or dashing forward at full speed at the sound of the trumpet, or signal of the officer.”
To take the virginity of a girl, to deflower.
“While brothel patrons placed their bets / On who would be the first to break her in”
To interrupt one's conversation; speak before another person has finished speaking.
To initiate a new person into prostitution or prison sex acts.