The Collaborative International Dictionary of English v.0.48:
Pickpocket \Pick"pock`et\, n. One who steals purses or other articles from pockets. --Bentley. [1913 Webster]WordNet (r) 3.0 (2006):
pickpocket n 1: a thief who steals from the pockets or purses of others in public places [syn: pickpocket, cutpurse, dip]