Possible Clues:

• Type of top
• With this sort of stopper you get it in the neck
• Horse owner's equipment
• Strap for leading a horse
• Neck strap on dress
• Rope or leather strap for tying up horse
• Comparatively lame device for leading Arabs
• Strap is hard to adjust
• He vacillates with noose
• That may stop you getting it in the neck