/ Dictionary / Index B backer: Meaning and Definition of Find definitions for: back•er Pronunciation: (bak'ur), [key] — n. a person who supports or aids a person, cause, enterprise, etc. a person who bets on a competitor in a race or contest. canvas or other material used for backing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: backer (Thesaurus) backend-to backer-up Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language