A tree skirt is a decorative piece that goes around the base of a Christmas tree, hiding the trunk and giving it an attractive appearance. It can be made from various materials such as fabric or faux fur, and comes in different colors, patterns, and designs to match the rest of the holiday décor. The purpose of a tree skirt is both functional and decorative - it protects the floor from water, needles, and other debris that may fall off the tree, while also adding an extra layer of beauty and coziness around the base of the Christmas tree.