joist
joist
noun \ˈjȯist\Definition of JOIST
: any of the small timbers or metal beams ranged parallel from wall to wall in a structure to support a floor or ceiling
See Illustration of JOIST
Origin of JOIST
Middle English giste, joiste, from Anglo-French giste, from Vulgar Latin *jacitum, from Latin jacēre to lie — more at adjacent
First Known Use: 15th century
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