Definition of "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 foundation (usually on soft ground) consisting of an extended layer of reinforced concrete

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

noun: a master's degree in teaching

noun: a mass that is densely tangled or interwoven

"A mat of weeds and grass."

verb: change texture so as to become matted and felt-like

verb: twist together or entwine into a confusing mass

adjective: not reflecting light; not glossy

"A photograph with a matte finish."