a long thick piece of wood or metal that is used to support a floor or ceiling in a buildingWordfinderconstructioncement,construction,foundation,girder,joist,masonry,plaster,rubble,scaffolding,siteSee related entries:Construction,StructuresWord Originlate Middle English giste, from Old French, ‘beam supporting a bridge’, based on Latin jacere ‘lie down’.Extra examplesCheck that all the floorboards are securely attached to their joists.Lift any loose floorboards and inspect the joists.The ceiling joists must be fire protected.The joists are then nailed into position.
See joist in the Oxford Advanced American Dictionary
