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swayback

[swey-bak]Veterinary Pathology
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noun
  1. an excessive downward curvature of the spinal column in the dorsal region, especially of horses.
adjective
  1. swaybacked.

Origin of swayback

An Americanism dating back to 1865–70; sway + back1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for swayback

Historical Examples

  • 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.