peal / pēl/ • n. 1. a loud ringing of a bell or bells. ∎ Bell-ringing a series of unique changes (strictly, at least five thousand) rung on a set of bells. ∎ a set of bells.2. a loud repeated or reverberating sound of thunder or laughter: Ross burst into peals of laughter.• v. [intr.] (of a bell or bells) ring loudly or in a peal: all the bells of the city began to peal. ∎ (of laughter or thunder) sound in a peal: Aunt Edie's laughter pealed around the parlor. ∎ [tr.] convey or give out by the ringing of bells: the carillon pealed out the news to the waiting city.