n.

1. A forcible entry, as into a building or room, for an illegal purpose, especially theft.
2. An initial period of employment or operation during which the performance of a person or thing may be evaluated and adjusted.

noun

The act of entering a building or room with the intent to commit theft: burglary, trespass. See crimes.

1.  Enter by force, as in The thieves broke in through the back door. [Mid-1500s]

Also see break into.
2.  Also, break in on. Interrupt or disturb something unexpectedly, as in His assistant broke in with the bad news just as we were ready to sign the agreement, or He broke in on our private talks. [Mid-1600s]
3.  Train or instruct someone in a new job or enterprise, as in Every semester she had to break in a new teaching assistant. [Late 1700s]
4.  Loosen or soften with use, as in It takes a while to break in a pair of new shoes.

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In bricklaying, a cutout in a brick wall, to form an aperture for the insertion of a timber.

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IN BRIEF: n. - Trespassing for an unlawful purpose.

Tutor's tip: A "break-in" is a forced entry, while to "break in" is to enter by force.

Dansk (Danish)
n. - bryde ind, foretage indbrud

Nederlands (Dutch)
inbraak

Français (French)
n. - cambriolage, vol par effraction

Deutsch (German)
n. - Einbruch

Ελληνική (Greek)
n. - διάρρηξη, παραβίαση

Italiano (Italian)
scasso

Português (Portuguese)
n. - arrombamento (m)

Русский (Russian)
вторжение

Español (Spanish)
n. - allanamiento

Svenska (Swedish)
n. - inbrott

中文（简体） (Chinese (Simplified))
非法侵入

中文（繁體） (Chinese (Traditional))
n. - 非法侵入

한국어 (Korean)
n. - 침입

日本語 (Japanese)
n. - 慣らすこと, 不法侵入

العربيه (Arabic)
‏(الاسم) دخول مبنى قسوة‏

עברית (Hebrew)
n. - ‮פריצה (לדירה)‬

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Break Key	the break up
prison break	5280 Break Jump Cue