brae /bɹeɪ/ noun2 •(Scotland, Northern-England) The sloping bank of a river valley.Ye banks, and braes, and streams around / The castle of Montgomery, / Green be your woods, and fair your flowers, / Your waters never drumlie! — 1791 •(Scotland, Northern-England) Any hillside or slope.The party was in a big bungalow with an enormous brae for a garden. — 1995 formsbraes