TREWS Meaning of TREWS in English [trews] n pl [ScGael triubhas] (ca. 1568) 1 chiefly Brit: [3]pant 1; esp: tight-fitting trousers usu. of tartan 2: close-cut tartan shorts worn under the kilt in Highland dress Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012