Merriam-Webster Collegiate Dictionary - vaunt

 I. verb  Etymology: Middle English, from Anglo-French vanter, from Late Latin vanitare, frequentative of Latin *vanare, from vanus vain  Date: 15th century  intransitive verb to make a vain display of one's own worth or attainments ; brag  transitive verb to call attention to pridefully and often boastfully people who ~ their ingenuity  Synonyms: see boast  • ~er noun  • ~ingly adverb  II. noun  Date: 14th century  1. a vainglorious display of what one is or has or has done  2. a bragging assertive statement