verb-intransitive. To boast; to make a vain display of one's own worth, attainments, decorations, or the like; to talk ostentatiously; to brag.v. To boast of; to make a vain display of; to display with ostentation. In the latter sense, the term usually used is flaunt.n. A vain display of what one is, or has, or has done; ostentation from vanity; a boast; a brag.n. The first part.v. To put forward; to display.