noun Date: 1901 any of various snails (as genera Planorbis, Helisoma, and Planorbarius ) often used as aquarium scavengers
RAMSHORN
Meaning of RAMSHORN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012