/ Dictionary / Index F flea collar: Meaning and Definition of Find definitions for: flea' col"lar Pronunciation: [key] a dog or cat collar impregnated with a chemical for repelling or killing fleas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flea-bitten fleam Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language