A horse, especially a chestnut-colored horse, or a reddish-brown color (archaic usage).
From Middle English and Old French 'Baiard,' originally the name of a famous magical horse in medieval legends. The word became generic for horses of that color and eventually fell into archaic usage.
Bayard was a legendary horse in French medieval romances that was magical and could understand human language—his name was so famous that it became the everyday word for chestnut horses, kind of like how 'kleenex' became a word for all tissues.
Complete word intelligence in one call. Free tier — 50 lookups/day.