What is the meaning of bluster?

noun

• Noisy confusion and turbulence.
  • usage: "he was awakened by the bluster of their preparations"
• A swaggering show of courage.
  • synonyms: bravado
• A violent gusty wind.
• Vain and empty boasting.
  • synonyms: braggadocio, rodomontade, rhodomontade

verb

• Blow hard; be gusty, as of wind.
  • usage: "A southeaster blustered onshore"; "The flames blustered"
• Show off.
  • synonyms: boast, tout, swash, shoot a line, brag, gas, blow, vaunt, gasconade
• Act in an arrogant, overly self-assured, or conceited manner.
  • synonyms: swagger, swash