1 definition by Miss Plum

Top Definition
a person who is not a stranger, but not quite what you would call a friend either. someone you see every day on public transit and chat with, but whose name you don't necessarily know. a passing acquaintance.
'I didn't know whether to lend her my go-go boots, as she was just a trolley friend.'
by Miss Plum September 19, 2005

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