Definition: The word "Appaloosa" comes from the Greek language, meaning "flying eagle." It means an animal with wings that can fly by virtue of its muscular, strong, and flexible body structure, which allows it to soar above the ground in the air. This term describes a type of wild horse native to North America, including horses like the Appaloosa, Horseshoe, and the Quarter Horse. Definition: The "Appaloosa" refers to an animal with wings that can fly by virtue of its muscular, strong, and flexible body structure, which allows it to soar above the ground in the air. This term describes a type of wild horse native to North America, including horses like the Appaloosa, Horseshoe, and the Quarter Horse.