/ Dictionary / Index A aq. bull.: Meaning and Definition of Find definitions for: aq. bull. Pronunciation: [key] (in prescriptions) boiling water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Aqaba aq. comm. 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