1) An outbuilding where deals and other wood might be stored.
1676 In the Deale House, 80 bunches of latts, Ł3 10s
100 of deales, Ł4
50 fir pooles at 12d per peece, Ł2 10s, Selby. This deal house belonged to John Chambers and in his will he referred to it as that layth or dealhouse so the inference is that it had been converted from a lathe or barn.