break in verb 8/ˈbɹeɪkˌɪn/ noun 2forms 5 verb8 •To enter a place by force or illicit means.Someone broke in and stole his radio. •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. •To tame; make obedient; to train to follow orders of the owner. •To interrupt one's conversation; speak before another person has finished speaking. •Starting something brand new or at a new level.He broke in with the New York Yankees. •To smash (something) by forcing it inward.Break in the door. We are held up! — 1914 •(informal) 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 — 2002 •(slang) To initiate a new person into prostitution or prison sex acts. break-in /ˈbɹeɪkˌɪn/ noun2 •The act of entering a place with the intent to steal or commit some other offense; an instance of breaking and entering.There was a break-in at the shop; everything was taken. •[before a noun] A novelty record where a question is asked or a comment is raised, and the replies are lyrics from other songs, sampled from the recordings. formsbroke in · broken in · breaking in · breaks in · break-ins