backswimmer | sense examples, Usage and Definition from wordnet dictionary online

Noun backswimmer has 1 sense

backswimmer, Notonecta undulata - predaceous aquatic insect that swims on its back and may inflict painful bites
--₁ is a kind of hemipterous insect, bug, hemipteran, hemipteron
--₁ is a member of Notonecta, genus Notonecta