Definition from Wiktionary, the free dictionary
- Not sound; not whole; not solid; defective; infirm; diseased.
- (of a horse) Suffering ill-health that affects suitability for intended work.
1822, Sir John Comyns and Anthony Hammond, A Digest of the Laws of England:
- ... A horse labouring under a temporary injury, capable of being speedily cured, is not unsound within the meaning of a warranty of soundness ...