/ Dictionary / Index B bygone: Meaning and Definition of Find definitions for: by•gone Pronunciation: (bī'gôn", -gon"), [key] — adj. past; gone by; earlier; former: The faded photograph brought memories of bygone days. —n. Usually,that which is past: Let's not talk of bygones. to decide to forget past disagreements; become reconciled: Let's let bygones be bygones and be friends again. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bygone (Thesaurus) by-form bylane 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