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Meaning of JOIST

Pronunciation:  joyst

WordNet Dictionary
[n]  beam used to support floors or roofs

JOIST is a 5 letter word that starts with J.


 See Also: beam, floor joist, trimmer, trimmer joist



Webster's 1913 Dictionary
  1. \Joist\, n. [OE. giste, OF. giste, F. g[^i]te, fr. gesir
    to lie, F. g['e]sir. 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.
  2. \Joist\, v. t. [imp. & p. p. {Joisted}; p. pr. & vb. n.
    To fit or furnish with joists. --Johnson.