Found 2 items, similar to boat bug.
English → English (WordNet) Definition: boat bug boat bug n : carnivorous aquatic bug having paddle-like hind legs [syn: water boatman ]
English → English (gcide) Definition: boat bug backswimmer \back"swim`mer\ n. any of numerous predaceous aquatic insects of the family Notonectidae (such as Notonecta undulata) that swim on their backs and may inflict painful bites; -- also called boat bug. --[RHUD] [WordNet 1.5 +PJC]