the world > food and drink > drink > manufacture of alcoholic drink > brewing > [noun] > surface for hop-drying
the world > the earth > minerals > mineral deposits > [noun] > course > of tin ore
1707 J. Mortimer (1721) I. 185 On this Tin-floor or Bed may the Hops be turned..with less expence of Fuel.
1839 A. Ure 1241 The stanniferous small veins,..interposed between certain rocks,..are commonly called tin-floors.