joist

(jo̵ist)

noun

any of the parallel planks or beams that hold up the planks of a floor or the laths of a ceiling

Origin: ME giste < OFr, a bed, couch, beam < gesir, to lie < L jacere, to lie, throw: see jet

transitive verb

to provide with joists

See joist in American Heritage Dictionary 4

noun

Any of the wood, steel, or concrete beams set parallel from wall to wall or across or abutting girders to support a floor or ceiling.

transitive verb joist·ed, joist·ing, joists

To construct with joists.

Origin:

Origin: Middle English giste, joiste

Origin: , from Old French giste

Origin: , from

Origin: feminine past participle of gesir, to lie, lie down

Origin: , from Latin iacēre; see yē- in Indo-European roots

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