(a.) The outer wall of the ground story of a building or of a part of that story, when treated as a distinct substructure. ( See Base, n., 3 (a).) Hence: The rooms of a ground floor, collectively.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). basement. Retrieved September 20, 2026, from http://smartdefine.org/basement/definitions/1978531 |
| Chicago | Webster's. 2011. "basement" http://smartdefine.org/basement/definitions/1978531 (accessed September 20, 2026). |
| Harvard | Webster's 2011, basement, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/basement/definitions/1978531>. |
| MLA | Webster's. "basement" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/basement/definitions/1978531> |