Joist (?), n. [OE. giste, OF. giste, F. gite, fr. gesir to lie, F. g'esir. See Gist.] Arch.

A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; -- called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under Double, a.


© Webster 1913.

Joist, v. t. [imp. & p. p. Joisted; p. pr. & vb. n. Joisting.]

To fit or furnish with joists.



© Webster 1913.

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