tank
1. tank \'tank\ n [Pg tanque, alter. of estanque, fr. estancar to stanch, fr. (]assumed) VL stanticare - more at STANCH dial 1: POND, POOL; esp : one built as a water supply 2: a usu. large receptacle for holding, transporting, or storing liquids 3: an enclosed heavily armed and armored combat vehicle supported, driven, and steered by caterpillar treads 4: a prison cell or enclosure used esp. for receiving prisoners 2. tank vt : to place, store, or treat in a tank