Sentence:  By yon bonnie banks, and by yon bonnie <WSD>braes</WSD>, / Where the sun shines bright on Loch Lomon', / Where me and my true love were ever wont to gae, / On the bonnie, bonnie banks o' Loch Lomon'. 
Meaning of the word marked with <WSD> tags:  The sloping bank of a river valley.