saddle
n//ˈsæd(ə)l//sadel, sadla
The immovable seat of a bicycle, motorcycle, or similar vehicle.
A seat for a rider, typically made of leather and raised in the front and rear, placed on the back of a horse or other animal, and secured by a strap around the animal's body.
A low point, in the shape of a saddle, between two hills.
(obsolete) To put something on to (another thing) like a saddle on an animal.
To put (something) on to another thing like a saddle on an animal.