'Water boatman' definitions:

Definition of 'water boatman'

(from WordNet)
noun
Carnivorous aquatic bug having paddle-like hind legs [syn: water boatman, boat bug]

Definition of 'Water boatman'

From: GCIDE
  • Water boatman \Wa"ter boat`man\ (Zool.) A boat bug. [1913 Webster]

Definition of 'water boatman'

From: GCIDE
  • Boat bug \Boat" bug`\ (Zool.) 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]