- 1a small piece of thick carpet or strong material that is used to cover part of a floor Wipe your feet on the mat before you come in, please. see bath mat, doormat
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- 2a piece of thick material such as rubber or plastic used especially in some sports for people to lie on or fall onto a judo/an exercise mat
- 3a small piece of plastic, wood, or cloth used on a table to protect the surface from heat or damage see place mat
- 4a thick mass of something that is stuck together a mat of hair see matted Idioms
to support or defend someone or something in an argument with someone
to get involved in an argument with someone or something
Check pronunciation: mat