Definition of apple snail in English:

apple snail

noun

  • 1Any of various freshwater prosobranch molluscs constituting the family Ampullariidae; especially those of the New World genus Pomacea, which are popular in tropical aquaria and can grow to a large size, but have become a serious pest following introduction in Asia.

  • 2British
    British the edible snail, Helix pomatia.

Origin

Late 18th century.