noun · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈbeɪsmənt/
US:Recorded audio is listed in the source snapshot.
rhymes with -eɪsmənt
CMU ARPABET:B EY1 S M AH0 N T
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A floor of a building below ground level.
Definition source: English Wiktionary via Wiktextract
Topics: architecture
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A floor of a building below ground level.
Ellipsis of semi-basement, a floor mostly below grade
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, ellipsis
Topics: architecture
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A mass of igneous or metamorphic rock forming the foundation over which a platform of sedimentary rocks is laid.
Definition source: English Wiktionary via Wiktextract
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
Last place in a sports conference's standings.
Definition source: English Wiktionary via Wiktextract
Usage: informal
Topics: hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
the lowermost portion of a structure partly or wholly below ground level; often used for storage
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: cellar
Antonyms: none provided
Broader terms: floor, level, storey, story
Narrower terms: cellarage
6
noun
Meaning 6
the ground floor facade or interior in Renaissance architecture
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: support
History
Etymology
Etymology tree English base Proto-Indo-European *-mn̥ Proto-Indo-European *-mn̥tom Proto-Italic *-mentom Latin -mentum Old French -mentbor. Middle English -ment English -ment English basement From base + -ment.
Across languages
Translations
142 source translations are retained for this English entry.