/bak"swim'euhr/ , n.
any of numerous predaceous aquatic hemipterous insects, of the family Notonectidae, that swim on their backs, and may inflict a painful bite if handled. Also called boat bug .
[ 1860-65; BACK 1 + SWIMMER ]
/bak"swim'euhr/ , n.
any of numerous predaceous aquatic hemipterous insects, of the family Notonectidae, that swim on their backs, and may inflict a painful bite if handled. Also called boat bug .
[ 1860-65; BACK 1 + SWIMMER ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012