Basement Definition

bāsmənt
noun
The foundation or lower part of a wall or structure.
Webster's New World
The lowest story of a building, below the main floor and wholly or partly below the surface of the ground.
Webster's New World
The oldest layer of igneous and metamorphic rocks in the crust of the earth, covered by layers of more recent, usually sedimentary rocks.
Webster's New World
The last place or lowest level, as in competitive standings.
American Heritage
A public toilet, especially one in a school.
American Heritage
Synonyms:
Antonyms:
attic
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Other Word Forms of Basement

Noun

Singular:
basement
Plural:
basements

Origin of Basement

  • Probably base –ment (perhaps influenced by French soubassement subfoundation)

    From American Heritage Dictionary of the English Language, 5th Edition

  • base +‎ -ment.

    From Wiktionary

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