Low storey (8)
I believe the answer is:
basement
(Other definitions for basement that I've seen before include "Bottom floor" , "Underground room" , "underground construction" , "Part of house below ground" , "Floor below ground level" .)
I believe the answer is:
basement
(Other definitions for basement that I've seen before include "Bottom floor" , "Underground room" , "underground construction" , "Part of house below ground" , "Floor below ground level" .)