Quick definitions from WordNet (mat)
▸ noun: a thick flat pad used as a floor covering
▸ noun: sports equipment consisting of a piece of thick padding on the floor for gymnastic sports
▸ noun: a small pad of material that is used to protect surface from an object placed on it
▸ noun: mounting consisting of a border or background for a picture
▸ noun: a master's degree in teaching
▸ noun: the property of having little or no contrast; lacking highlights or gloss
▸ verb: twist together or entwine into a confusing mass
▸ verb: change texture so as to become matted and felt-like
▸ adjective: not reflecting light; not glossy ("A photograph with a matte finish")
▸ Also see mat
▸ noun: a thick flat pad used as a floor covering
▸ noun: sports equipment consisting of a piece of thick padding on the floor for gymnastic sports
▸ noun: a small pad of material that is used to protect surface from an object placed on it
▸ noun: mounting consisting of a border or background for a picture
▸ noun: a master's degree in teaching
▸ noun: the property of having little or no contrast; lacking highlights or gloss
▸ verb: twist together or entwine into a confusing mass
▸ verb: change texture so as to become matted and felt-like
▸ adjective: not reflecting light; not glossy ("A photograph with a matte finish")
▸ Also see mat