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swayback

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

Historical Examples

  • Some woodworkers give their saws a slight camber, or belly, to correspond with the sway-back.

    Farm Mechanics

    Herbert A. Shearer

British Dictionary definitions for sway-back

sway-back

noun
  1. vet science an abnormal sagging or concavity of the spine in older horses
  2. a paralytic disease of new-born and young lambs caused by demyelination of the central nervous system due to copper deficiency
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Derived Formssway-backed, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012