Potter's Supply is a term used to describe the materials and tools needed for pottery. The two crossword solutions for this term are GLAZE (5 letters) and CLAY (4 letters). GLAZE is a glass-like coating that is applied to pottery to give it a glossy finish. CLAY is a malleable material made from natural minerals that is used to form pottery. Both GLAZE and CLAY are essential components of pottery and are necessary for any potter's supply.