Burglary, also called breaking and entering, is illegally going into a building or area in order to commit a crime, usually theft. Someone who does burglary is called a burglar. To commit burglary is to "burgle" or to "burglarize". Burglaries can happen at any time or any place. The word "burglar" comes from the Old English words "burg" ("house") and "laron" ("thief"). 