basement basement /ˈbeɪsmənt/

noun

1. () The lowermost portion of a structure partly or wholly below ground level; often used for storage  ( cellar , basement )
   the lowermost portion of a structure partly or wholly below ground level; often used for storage
    The basement was damp and musty, but it was a good place to store canned goods
   The basement was damp and musty, but it was a good place to store canned goods
   
   
2. The ground floor facade or interior in Renaissance architecture  ( basement )
   the ground floor facade or interior in Renaissance architecture
    The basement in that Renaissance building was used as a wine cellar.
   The basement in that Renaissance building was used as a wine cellar.