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1.
A person who moves and organises trollies in a supermarket for a living.
Michael: Remember John?
Sean: Yeah, didn't he drop out of school? What's he doing now?
Michael: Oh, he's a trolleyologist now down in Tesco.
by wheelybin September 25, 2009
 
2.
A person whose job it is to collect trolleys for a living
I am a trolleyologist
by Paul C22 May 24, 2007