/ Dictionary / Index B bottom dog: Meaning and Definition of Find definitions for: bot'tom dog' Pronunciation: [key] underdog. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bottom bolt bottom drawer 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