A basement is one or more floors of a building that are either completely or partially below the ground floor. Slab-on-grade buildings do not have basements.
http://en.wikipedia.org/wiki/Basement

Off-price store offers brand name and designer fashions for men and women, decorative home goods and fine jewelry. Includes events, news and employment opportunities. Locations in ...
http://www.filenesbasement.com/

Music club and bistro. Provides information on ticket sales, reservations and menu.
http://www.thebasement.com.au/

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http://www.basementarea.com/

A number of student-focused and student-developed web applications including WebBlitz, the DID, the Exchange and Online Elections.
http://basement.dartmouth.edu/