The back of a saddle seat.
Cantle is a noun.
cantle, back, backrest or pommel
the back of the saddle is the cantle
It is called the Cantle.
depending on what the "back" means, it could refer to a skirt or a cantle or a roll.
The cantle and the sweat flaps
The seat of a saddle is the area that you sit on. In English it is between the cantle and the pommel. In Western it is between the cantle and the horn.
S. R. Cantle has written: 'Human biology' -- subject(s): Human physiology
Cantle Meadows on HorseIsle
Cantle
cantle, sweat flaps