joist

[ joist ]
/ dʒɔɪst /

noun

any of a number of small, parallel beams of timber, steel, reinforced concrete, etc., for supporting floors, ceilings, or the like.

verb (used with object)

to furnish with or fix on joists.

RELATED WORDS

Origin of joist

1325–75; Middle English giste < Old French < Latin *jacitum support, noun use of neuter of Latin jacitus (past participle of jacēre to lie), equivalent to jaci- variant stem + -tus past participle suffix

Related forms

joist·less, adjective
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Examples from the Web for joist

British Dictionary definitions for joist

joist

/ (dʒɔɪst) /

noun

a beam made of timber, steel, or reinforced concrete, used in the construction of floors, roofs, etcSee also rolled-steel joist

verb

(tr) to construct (a floor, roof, etc) with joists

Word Origin for joist

C14: from Old French giste beam supporting a bridge, from Vulgar Latin jacitum (unattested) support, from jacēre to lie
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012