名詞 mater:

1. an informal use of the Latin word for mother; sometimes used by British schoolboys or used facetiously

形容詞 mat:

1. not reflecting light; not glossy
   同義詞：flat, mat, matt, matte, matted

1. A network of extremely small blood vessels passing between the pia mater and the cerebral cortex.
   大腦絨被從軟膜和大腦皮層之間穿過的極細的小血管形成的網
2. Say no bilge water about the mater.
   在這個問題上別說廢話。

ma.ter

n.Chiefly British （名詞）【多用于英國】
Mother.
母親

來源：
Latin m3ter * see m3ter-
拉丁語 m3ter *參見 m3ter-