joist
joist definition
joist (jo̵ist)
noun
any of the parallel planks or beams that hold up the planks of a floor or the laths of a ceiling
Etymology: ME giste < OFr, a bed, couch, beam < gesir, to lie < L jacere, to lie, throw: see jet
transitive verb
to provide with joists
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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