A hay holder is a device used to store hay, which is a type of grass that is cut and dried for use as animal feed. The three crossword solutions for the term 'hay holder' are BARN (4 letters), SILO (4 letters), and LOFT (4 letters). A BARN is a large agricultural building used to store hay and other farm equipment. A SILO is a cylindrical structure used to store hay and other grains. A LOFT is an upper room or storage area in a BARN, often used to store hay.