/ Dictionary / Index B backswimmer: Meaning and Definition of Find definitions for: back•swim•mer Pronunciation: (bak'swim"ur), [key] — 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 Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: backswimmer (Thesaurus) backswept backswing Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language