Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun backswimmer
1 sense of backswimmer
Sense 1
backswimmer, Notonecta undulata -- (predaceous aquatic insect that swims on its back and may inflict painful bites)
=> hemipterous insect, bug, hemipteran, hemipteron -- (insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis)