The Collaborative International Dictionary
Lynx rufa
Bay \Bay\ (b[=a]), a. [F. bai, fr. L. badius brown, chestnut-colored; -- used only of horses.] Reddish brown; of the color of a chestnut; -- applied to the color of horses.
Bay cat (Zo["o]l.), a wild cat of Africa and the East Indies ( Felis aurata).
Bay lynx (Zo["o]l.), the common American lynx ( Lynx lynx, formerly Felis rufa or Lynx rufa).