The Collaborative International Dictionary of English v.0.48:

Hawker \Hawk"er\ (h[add]k"[~e]r), n.
   One who sells wares by crying them in the street; hence, a
   peddler or a packman. --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hawker \Hawk"er\, v. i.
   To sell goods by outcry in the street. [Obs.] --Hudibras.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hawker \Hawk"er\, n. [Cf. AS. hafecere. See 1st Hawk.]
   A falconer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

hawker
    n 1: someone who travels about selling his wares (as on the
         streets or at carnivals) [syn: peddler, pedlar,
         packman, hawker, pitchman]
    2: a person who breeds and trains hawks and who follows the
       sport of falconry [syn: falconer, hawker]