break in

Definition of break in in English English dictionary: To enter a place by force or other illicit means
Someone broke in and stole his radio.; 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 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 cause (something, or someone, new) to function more naturally through use or wear
These shoes will be more comfortable after I have broken them in.; If someone, usually a thief, breaks in, they get into a building by force. Masked robbers broke in and made off with $8,000 see also break-in; make submissive, obedient, or useful; "The horse was tough to break"; "I broke in the new intern"; start in a certain activity, enterprise, or role intrude on uninvited; "The nosy couple broke in on our conversation"; {f} enter forcibly; enter a building or room or a person's house by means of force (with the intention to steal or commit a violent act); interrupt a person while he is speaking; train a beginner; make something more natural through use or wear; If you break in on someone's conversation or activity, you interrupt them. O'Leary broke in on his thoughts Mrs Southern listened keenly, occasionally breaking in with pertinent questions `She told you to stay here,' Mike broke in. = butt in; break so as to call inward; "He broke in the door"; intrude on uninvited; "The nosy couple broke in on our conversation"; break into a conversation; "her husband always chimes in, even when he is not involved in the conversation"; enter someone's property in an unauthorized manner, usually with the intent to steal or commit a violent act; "Someone broke in while I was on vacation"; "They broke into my car and stole my radio!; If you break someone in, you get them used to a new job or situation. The band are breaking in a new backing vocalist; start in a certain activity, enterprise, or role; If you break in something new, you gradually use or wear it for longer and longer periods until it is ready to be used or worn all the time. When breaking in an engine, you probably should refrain from high speed for the first thousand miles; An act of entering somewhere with the intent to steal or commit some other offence
There was a break-in at the shop; everything was taken.; trespassing for an unlawful purpose; illegal entrance into premises with criminal intent; The process of running a nitro powered engine at idle speeds to prepare it for general use The generally accepted method is to run the engine very rich (the exact needle valve adjustment will vary from engine to engine) for at least 3-4 tanks while the car is on a car stand Running a fan over the engine and varying the idle speed slightly during break-in is also generally accepted NOTE: As the engine breaks in, the speeds will pick up and you may have to richen the air/fuel mixture slightly An engine isn't fully broken-in until it has run about 10-15 tanks, at which point you will see its full potential; Initial wear of mechanical components when large surface asperities can cause high friction and wear rates; {i} forced entry, entry to the property or house of a person by means of force (for the purposes of theft or commiting a violent act); initial period of employment during which the employee's perfomance is evaluated; If there has been a break-in, someone has got into a building by force. The break-in had occurred just before midnight. = burglary. an act of entering a building illegally and by force, especially in order to steal things