mat

a thick flat pad used as a floor covering

mounting consisting of a border or background for a picture

sports equipment consisting of a piece of thick padding on the floor for gymnastic sports

a mass that is densely tangled or interwoven; "a mat of weeds and grass"

a master's degree in teaching

the property of having little or no contrast; lacking highlights or gloss

a small pad of material that is used to protect surface from an object placed on it

twist together or entwine into a confusing mass; "The child entangled the cord"

change texture so as to become matted and felt-like; "The fabric felted up after several washes"

not reflecting light; not glossy; "flat wall paint"; "a photograph with a matte finish"