The Collaborative International Dictionary of English v.0.48:

Cadger \Cadg"er\, n. [From Cadge, v. t., cf. Codger.]
   [1913 Webster]
   1. A packman or itinerant huckster.
      [1913 Webster]

   2. One who gets his living by trickery or begging. [Prov. or
      Slang] "The gentleman cadger." --Dickens.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cadger \Cadg"er\, n. [OF. cagier one who catches hawks. Cf.
   Cage.] (Hawking)
   One who carries hawks on a cadge.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cadger
    n 1: someone who mooches or cadges (tries to get something free)
         [syn: moocher, mooch, cadger, scrounger]