from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The substructure or foundation of a building.
- n. The lowest habitable story of a building, usually below ground level.
- n. Geology A complex of undifferentiated igneous and metamorphic rocks underlying sedimentary strata.
- n. Slang The last place or lowest level, as in competitive standings.
- n. Chiefly New England A public toilet, especially one in a school.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A floor of a building below ground level.
- n. Last place in a sports conference standings.
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from The Century Dictionary and Cyclopedia
- n. The lower or fundamental portion; a base.
- n. In architecture: The portion of the elevation of a structure which performs the function in the design of constituting a support to those portions which come above it; especially, the substructure of a columnar or arched construction, but also the lowest member in the design of a wall, etc. Compare base, 3.
- n. A floor or story which is wholly or in part beneath the surface of the ground, but is usually, as distinguished from a cellar, well lighted, and fitted up and used for household or other usual purposes.
- n. The act of basing, or the state of being based.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the lowermost portion of a structure partly or wholly below ground level; often used for storage
- n. the ground floor facade or interior in Renaissance architecture
Probably base1 + -ment (perhaps influenced by French soubassement, subfoundation).(American Heritage® Dictionary of the English Language, Fourth Edition)