/ Dictionary / Index B Bigtha: Meaning and Definition of Find definitions for: Big•tha Pronunciation: (big'thu), [key] — n. one of the seven eunuchs who served in the court of King Ahasuerus. Esther 1:10. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. big talk big-ticket Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language