Merriam-Webster's Collegiate® Dictionary, 11th Edition
BOAST
I. noun
Etymology: Middle English boost
Date: 14th century
the act or an instance of boasting ; brag , a cause for pride, boastful adjective boastfully adverb boastfulness noun
II. verb
Date: 14th century
intransitive verb to puff oneself up in speech ; speak vaingloriously, glory , exult , transitive verb to speak of or assert with excessive pride,
2. to possess and often call attention to (something that is a source of pride) , have , contain , boaster noun Synonyms: see: boast
III. transitive verb
Etymology: origin unknown
Date: 1823
to shape (stone) roughly in sculpture and stonecutting as a preliminary to finer work