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n.1.(Carp.) The space or interval between two joists.
2.A middle joist or crossbeam.
References in classic literature ?
It was circular in form, carpeted with mats of shining straw, ceiled with beams, enriched with fleurs-de-lis of gilded metal with interjoists in color; wainscoated with rich woods sown with rosettes of white metal, and with others painted a fine, bright green, made of orpiment and fine indigo.