A large basin or cistern; an artificial receptacle for liquids. Tank engine, a locomotive which carries the water and fuel it requires, thus dispensing with a tender. Tank iron, plate iron thinner than boiler plate, and thicker than sheet iron or stovepipe iron.
(Science: zoology) Tank worm, a small nematoid worm found in the water tanks of india, supposed by some to be the young of the guinea worm.
Origin: Pg. Tanque, L. Stangum a pool; or perhaps of East Indian origin. Cf. Stank.