Adjective mat has 1 sense
  1. flat, mat, matt, matte, matted - not reflecting light; not glossy; "flat wall paint"; "a photograph with a matte finish"
    Antonym: bright (indirect, via dull)
,Noun mater has 1 sense
  1. ma, mama, mamma, mom, momma, mommy, mammy, mum, mummy, mater - informal terms for a mother
    --1 is a kind of mother, female parent
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