(rail transport) A railroad car or rolling stock designed to transport liquids or gases.

(automotive) tanker (type of truck)

(medicine) A device for collecting exhaled air for analysis, similar to a Douglas bag.

(aviation) An expendable external fuel tank on an aircraft.

plural of tank truck

present participle of tank up.

simple past tense and past participle of tank up

(slang) Intoxicated.

(plumbing) A flush-tank in which water gathers in one chamber before being tilted over so as to discharge its contents.

present participle of think-tank