Swayback

noun

Definitions

Adjective
  1. 1
    having abnormal sagging of the spine (especially in horses) wordnet
Noun
  1. 1
    An excessive sagging of the spine of a quadruped animal, especially a horse. countable, uncountable
  2. 2
    An animal with such excessive sagging. countable, uncountable

Etymology

From sway + back.

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