joist
/d͡ʒɔɪst/ noun, verb
Forms joists joisting joisted
- noun A piece of timber or steel laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed.
- verb (transitive) To fit or furnish with joists.
Etymology
From Old French giste, feminine of gist, the past participle of gesir (“to lie down”).
Webster’s 1913
- noun 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.
- verb To fit or furnish with joists. Johnson.
Etymology [OE. giste, OF. giste, F. gîte, fr. gesir to lie, F. gésir. See Gist.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “joist”, CC BY-SA 4.0. Details