Boast meaning : A brag; ostentatious positive appraisal of oneself. Something that one brags about. A shot where the ball is driven off a side wall and then strikes the front wall. To brag; to talk loudly in praise of oneself. To speak of with pride, vanity, or exultation, with a view to self-commendation; to extol. To speak in exulting language of another; to glory; to exult. To play a boast shot. To possess something special.