nūbĭlārĭum

I. a shed or barn, in which corn was kept from the rain: aedificium facere oportet, sub quod tectum totam fundi subicere possis messem, quod vocant quidam nubilarium, Varr. R. R. 1, 13, 5; Col. 1, 6, 24; 2, 20, 3; Pall. 1, 36, 2.