Found 1 items, similar to boat fly.
English → English (gcide) Definition: boat fly Boat bug \Boat" bug`\ (Zo["o]l.) An aquatic hemipterous insect of the genus Notonecta; -- so called from swimming on its back, which gives it the appearance of a little boat. Called also boat fly, boat insect , boatman, and water boatman. [1913 Webster]