Meaning & use
joist
A long horizontal beam of wood or metal that supports a floor, ceiling, or roof.
See it in a sentence
The contractor checked each joist for rot before laying the new floorboards.
Electricians ran wiring through gaps between the ceiling joists in the attic.
A note on using this word
Joists run parallel to each other and are typically hidden once flooring or drywall is installed.
Words with a similar meaning
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