Possible Clues:

• Horse sounding not so old, it's said
• Beastly sound in 7 8
• Cry of horse
• East in the Near way is enough to make one sound hoarse
• Arab's greeting
• Beastly sound made by the people next door? Not half!
• Speak in a horse voice
• No sound could make one sound hoarse, by the sound of it
• Info brought back about one horse nicker
• High-pitched cry of a horse