noun Slang.
- an exceptionally boastful and talkative person.
noun
- a boastful person
adjective
- blustering or boastful
also blow-hard, 1840, a sailor’s word (from 1790 as a nickname for a sailor), perhaps not originally primarily meaning “braggart;” from blow (v.1) + hard (adv.). An adjective sense of “boastful” appeared c.1855, and may be a separate formation leading to a modified noun use.