/ Dictionary / Index B base rate: Meaning and Definition of Find definitions for: base' rate' Pronunciation: [key] the rate of pay per unit of time, as by the hour, or per piece, or for work performed at an established standard rate. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. base price base runner Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language