Dictionary definition · bluster
noun
- noisy confusion and turbulence"he was awakened by the bluster of their preparations"
- a swaggering show of courage
- a violent gusty wind
- vain and empty boasting
verb
- blow hard; be gusty, as of wind"A southeaster blustered onshore"
- show off
- act in an arrogant, overly self-assured, or conceited manner
Source: Open English WordNet (CC BY 4.0).