burglar: [15] The first trace we have of burglar is as burgulator in 13th-century Anglo-Latin texts, and it appears in Anglo-Norman legal documents of the 15th century as burgler. These point to an unrecorded medieval Latin base *burg- ‘plunder’, which appears in Old French burgur ‘robber’. The verb burgle is a 19thcentury back-formation from burglar. [burglar etymology, burglar origin, 英语词源]