Top Definition
(noun): a programmer/hacker/web designer who just really needs a life and a better sense of fashion since beanies are extremely out of style.
(adjective): something you should be very ashamed of
"That guy looks like an atsuro! All he does is carry around that laptop of his."
"Dude, that's so atsuro. No one cares about your lameass Pokemon cards."
by shin-juku September 24, 2013

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