[ swey-bak ]
/ ˈsweɪˌbæk /
an excessive downward curvature of the spinal column in the dorsal region, especially of horses.
Origin of swayback
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for swayback
A man well advanced in years dismounted from a swayback horse at the gate, threw a plow point on the ground and came forward.Up Terrapin River|Opie P. Read
It was a nuisance to have to keep an eye on the vicious heels of Baldy, the swayback gelding at his left—that was all.