Top Definition
A-Basin is the shortened name give to the Arapahoe Basin Ski Area in Colorado. A-Basin is also known simply as The Basin.

A-Basin is famous for it's long standing years of operation,skiing heritage, high altitude and long ski season. It's most famous ski run is "Pallavicini", shown on the A-Basin trail map as "Pali Main Street".
I'm goin ragin at A-basin, Colorado for a week of snowboarding.
by The Snow Prophet May 12, 2010

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