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Definition of basement

basement

/ˈbeɪs.mənt/
base · ment

Plural:basements
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basement Lexical Profile

basement Game Scores & Validity

• noun

1

The floor of a building that is partly or entirely below ground level.

Example

"They converted the old basement into a comfortable guest bedroom and home office."


2

North American Informally, the lowest position or last place in the standings of a sports league or competition.

Example

"After losing ten consecutive games, the struggling franchise remained stuck in the league basement."


3

In geology, the ancient assembly of igneous and metamorphic rocks that underlies the sedimentary rock cover of a continent.

Example

"Deep drilling operations reached the crystalline basement beneath the thick sedimentary basin."

Synonyms
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Antonyms
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• Rhymes for basement

Word Origin & Etymology

Coined in the early 18th century from the noun and verb 'base' plus the suffix '-ment', originally referring to the foundational or lowest architectural support of a structure.

Cite this Entry


Wordmom. (2026). Definition of Basement. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/basement
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