The Collaborative International Dictionary of English v.0.48:

Swagger \Swag"ger\, n.
   A swagman. [Australia]
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Swagman \Swag"man\, n.
   A bushman carrying a swag and traveling on foot; -- called
   also swagsman, swagger, and swaggie.
   [Webster 1913 Suppl.]

         Once a jolly swagman sat beside a billabong
         Under the shade of a coolibah tree.
         And he sang as he sat and watched his billy boiling,
         `Who'll come a-waltzing Matilda with me?' --[Waltzing
                                                  Matilda, an
                                                  Australian
                                                  tune.]
   [PJC]

The Collaborative International Dictionary of English v.0.48:

Swagger \Swag"ger\, v. i. [imp. & p. p. Swaggered; p. pr. &
   vb. n. Swaggering.] [Freq. of swag.]
   1. To walk with a swaying motion; hence, to walk and act in a
      pompous, consequential manner.
      [1913 Webster]

            A man who swaggers about London clubs.
                                                  --Beaconsfield.
      [1913 Webster]

   2. To boast or brag noisily; to be ostentatiously proud or
      vainglorious; to bluster; to bully.
      [1913 Webster]

            What a pleasant it is . . . to swagger at the bar!
                                                  --Arbuthnot.
      [1913 Webster]

            To be great is not . . . to swagger at our footmen.
                                                  --Colier.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Swagger \Swag"ger\, v. t.
   To bully. [R.] --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Swagger \Swag"ger\, n.
   The act or manner of a swaggerer.
   [1913 Webster]

         He gave a half swagger, half leer, as he stepped forth
         to receive us.                           --W. Irving.
   [1913 Webster]

WordNet (r) 3.0 (2006):

swagger
    adj 1: (British informal) very chic; "groovy clothes" [syn:
           groovy, swagger]
    n 1: an itinerant Australian laborer who carries his personal
         belongings in a bundle as he travels around in search of
         work [syn: swagman, swagger, swaggie]
    2: a proud stiff pompous gait [syn: strut, prance,
       swagger]
    v 1: to walk with a lofty proud gait, often in an attempt to
         impress others; "He struts around like a rooster in a hen
         house" [syn: tittup, swagger, ruffle, prance,
         strut, sashay, cock]
    2: discourage or frighten with threats or a domineering manner;
       intimidate [syn: browbeat, bully, swagger]
    3: act in an arrogant, overly self-assured, or conceited manner
       [syn: swagger, bluster, swash]