booster
noun
1
a thief, especially a shoplifter or car thief US, 1908.
2
a full-time, career thief US, 1977.
3
a criminal who specialises in selling stolen goods US, 1985.
4
a confederate of a cheat who lures players to a card game, carnival concession or other game of chance US, 1906.
5
an additional dose of a drug taken to prolong intoxication US, 1970