joist (noun) /d͡ʒɔɪst/
1
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.
joist (verb) /d͡ʒɔɪst/
1
(transitive) To fit or furnish with joists.
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.
(transitive) To fit or furnish with joists.