Green’s Dictionary of Slang

1. (Aus./US Und.) an accomplice who makes contact with an intended victim or punter, also in a shoplifting team.

1901		Sydney Sportsman (Surry Hills, NSW) 4 Sept. 1/1: Legitimate punters [...] place their solid gilt down for plausible ‘luggers’ [...] these victims are ruined by luggers financially.
1927–41		in G. Legman Limerick (1953) 188: There was a young girl of Bombay / Who was put in the family way / By the mate of a lugger, / An ignorant bugger.
1940		D. Maurer Big Con 301: lugger. See outsideman.
1980		(con. 1972) W. Sherman Times Square 143: Helwig had worked years before as a ‘lugger,’ a man who chauffeurs players to and from high-action crap games.

2. (Can. prison) a smuggler of contraband in or out of the prison.

1978

R. Caron Go-Boy! (1979) 316: lugger – a contraband carrier.