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1.
A cultivated person who frequents the most fashionable locales in cities like New York, London or Paris.

A boulevardier must express his sense of high fashion and have knowledge of advanced cultural pursuits.
A: "What is doing your friend Gerard in town?
B: "Strolling down Fifth Avenue or Broadway; he is an in-your-face boulevardier."
by rperazag July 17, 2010