[1] : The Collaborative International Dictionary of English v.0.48

tank \tank\ ta^ngk, n. pg. tanque, l. stangum a pool; or
   perhaps of east indian origin. cf. stank, n.
   1. a large basin or cistern; an artificial receptacle for
      liquids.
      1913 webster

   2. a pond, pool, or small lake, natural or artificial.
      webster 1913 suppl.

            we stood in the afterglow on the bank of the tank
            and saw the ducks come home.          --f.
                                                  remington.

            the tanks are full and the grass is high. --lawson.
      webster 1913 suppl.

   3. mil. a heavily armored combat vehicle which moves on
      caterpillar treads, rather than wheels. it typically
      carries a cannon and a heavy machine, and sometimes other
      weapons. it is the main distinguishing weapon of an
      armored division.
      pjc

   4. a jail cell for temporarily holding prisoners, as in a
      police station.
      pjc

   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.

   tank worm zool., a small nematoid worm found in the water
      tanks of india, supposed by some to be the young of the
      guinea worm.
      1913 webster
see also:
stank tank engine tank iron tank worm 

Parasitic Worm >> P Words
Parasitic Worm, definition of term: Parasitic Worm
parasitic+worm_pag1.html

Meal Worm >> M Words
Meal Worm, definition of term: Meal Worm
meal+worm_pag1.html

Internet Worm >> I Words
Internet Worm, definition of term: Internet Worm
internet+worm_pag1.html

Guinea Worm >> G Words
Guinea Worm, definition of term: Guinea Worm
guinea+worm_pag1.html

Fish Tank >> F Words
Fish Tank, definition of term: Fish Tank
fish+tank_pag1.html