1) A container for salt.
1597 a Cradle & a salte pie, Wakefield
1622 pecks, mandes ... salt pye, Bingley
1676 a saltpye, 1 pigin, Selby
1700 a salt pye, two leades and a mustard ball, Holmfirth
1731 a salt py and salt in it, Austerfield. It gave its name to a type of lean-to building and this in turn explains a number of late minor place-names.