This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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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.

n. A floor of a building below ground level.

n. Last place in a sports conference standings.

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.

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.

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

"The flood in the basement is a less uplifting indicator that a major thaw is underway."

support   

english basement    basement membrane    basement tissue   

base   

subbasement   

debasement    displacement    emplacement    placement    replacement    retracement   

cellar    attic    hallway    garage    dungeon    bedroom    courtyard    lobby    cavern    apartment