1) Booster 2) Lifter 3) One needing a fence 4) One with hot stuff 5) Stealer 6) Thief 1) Robber 2) Stealer 3) Thief 
• (n.) One who steals anything in a shop, or takes goods privately from a shop; one who, under pretense of buying goods, takes occasion to steal.
A person who steals goods from a store, while pretending to shop. 
Shop'lift`er noun [ Shop + lift. See Lift to steal.] One who steals anything in a shop, or takes goods privately from a shop; one who, under pretense of buying goods, takes occasion to steal.