WordNet (r) 3.0 (2006):

hustler
    n 1: a prostitute who attracts customers by walking the streets
         [syn: streetwalker, street girl, hooker, hustler,
         floozy, floozie, slattern]
    2: a shrewd or unscrupulous person who knows how to circumvent
       difficulties [syn: hustler, wheeler dealer, operator]