Sentence:  Just then the chiefs their tribes arrayed, / And wild and garish semblance made, / The chequered trews, and belted plaid, / And varying notes the war-pipes <WSD>brayed</WSD>, / To every varying clan; [...] 
Meaning of the word marked with <WSD> tags:  To make or utter (a shout, sound, etc.) discordantly, loudly, or in a harsh and grating manner.