tank-worm

== English == === Etymology === So-named as it was commonly found in the mud in water tanks of India in the 19th century. === Noun === tank-worm (plural tank-worms) (archaic, India) A small nematoid worm, likely to be the young of the guinea-worm. === References === “tank”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.