basement
base.ment \'ba--sm*nt\ n [prob. fr. 1base] often attrib 1: the ground floor facade or interior in Renaissance architecture 2: the part of a building that is wholly or partly below ground level 3: the lowest or fundamental part of anything
Webster's English Dictionarybase.ment \'ba--sm*nt\ n [prob. fr. 1base] often attrib 1: the ground floor facade or interior in Renaissance architecture 2: the part of a building that is wholly or partly below ground level 3: the lowest or fundamental part of anything