1) Bay feeder 2) Equine lunchbox 3) Feedbag 4) Feeder in a stable 5) Feeder on the farm 6) Feeder with fodder 7) Horse feed supporter 8) Kelso feeder 9) Mobile dinner for dobbin 10) Muzzle attachment 11) Nag feeder 12) Oats container 13) Portable horse feeder 14) Source of oats 15) Steed feeder 1) Feedbag 
food bag hung over a horse's head
• (n.) A bag in which feed for a horse, ox, or the like, may be fastened under the nose by a string passing over the head. • (n.) A bag in which feed for a horse, ox, or the like, may be fastened under the nose by a string passing over the head.
Nose'bag` noun A bag in which feed for a horse, ox, or the like, may be fastened under the nose by a string passing over the head. 
[n] - a canvas bag that is used to feed an animal (such as a horse)
feedbag noun a canvas bag that is used to feed an animal (such as a horse); covers the muzzle and fastens at the top of the head