1A floor in a malthouse where the steeped grain is spread out and turned while it begins to sprout. Also called growing floor. Now chiefly historical.
2Generally. A floor or other horizontal surface on which work is performed or some technical operation is carried out.
A horizontal surface where mining or excavation is carried out.
A well-defined layer of materials and artefacts associated with the making of stone or flint implements.
Mid 18th century; earliest use found in London Evening Post. From working + floor.