saddle-broken

I have trouble finding homes for even the ones that are saddle-broken.

We have four colts ready to be saddle-broken, and more at our big hostel near Thendara.

Demand for saddle-broken mustangs is high.

Like a wild beast that refused to be saddle-broken, it was vigorously, openly hostile; from the violent radiation belts cloaking it in space to its tempestuous atmosphere, this rock-world bucked and howled and skittered to keep civilization from gaining a foothold amid it sullen valleys and forbidding peaks.