joistlessadj.
Etymology: < joist n.1 + -less suffix.Previous versions of the OED give the stress as: ˈjoistless.
society > inhabiting and dwelling > inhabited place > a building > parts of building > framework of building > [adjective] > having no joists
1861 G. Smith xix. 273 The houses..were..joistless structures unfastened with clamps and ligatures at the angles.
This entry has not yet been fully updated (first published 1901; most recently modified version published online June 2020).