Definition of salt horse in English:

salt horse

noun

nautical slang, archaic
  • Salted beef.

    • ‘Salt beef, derisively labeled "salt horse" by the soldiers, was hardly fit for consumption. It was so heavily impregnated with salt that it had to be soaked overnight in a running stream. Even then, it was still often rusty from improper packing and gave off an incredible stench.’
    • ‘Pork and beef came packed in casks of four pound pieces, pickled in brine, and known to the men as ‘salt horse’.’