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joist

Pronunciation: /dʒɔɪst/
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Definition of joist

noun

  • a length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling.

Derivatives

joisted

adjective

Origin:

late Middle English giste, from Old French, 'beam supporting a bridge', based on Latin jacere 'lie down'

joist in other Oxford dictionaries

Definition of joist in the US English dictionary