1540s, alteration of racen "pull or knock down" (a building or town), from earlier rasen (14c.) "to scratch, slash, scrape, erase," from Old French raser "to scrape, shave," from Medieval Latin rasare, frequentative of Latin radere (past participle rasus) "to scrape, shave," possibly from an extended form of PIE root *red- "to scrape, scratch, gnaw." Related: Razed; razing.