Filly A yearling Arabian filly A filly is a female horse that is too young to be called a mare. In most cases, a filly is a female horse under four years old.

Dec 18, 2025 · A filly is a female horse under four years old, while a mare is a female horse over four. The term "foal" refers to a baby horse of unknown gender, while "filly" specifically refers to a young …

Aug 22, 2025 · A filly is a word used for a young female horse under four years of age. The word filly was coined in the Medieval period and was derived from the Old Norse fylja, which meant young …

Apr 24, 2024 · A filly is a young female horse that hasn’t yet reached her fourth birthday. In the horse world, knowing these terms is key because each one tells us a bit more about the horse’s age and …

Share Kids Definition filly noun fil· ly ˈfil-ē plural fillies : a young female horse usually less than four years old

It is a filly carrying a much lighter mount and, in view of that, is much more likely to succeed in the race for better and faster production.

Jul 7, 2025 · A filly is a young female horse under the age of four. This classification is important in equine care, as fillies have unique developmental needs compared to older mares or male horses.

Dec 22, 2025 · When it comes to filly horses, knowledge is power, and a healthy filly is built on understanding her body structure. Filly anatomy isn’t drastically different from that of a mature horse; …

Nov 16, 2024 · A filly is a young female horse, typically under the age of 4. This term refers specifically to a female horse that has not yet reached full maturity. Filly horses are energetic, playful, and …

FILLY definition: a young female horse. See examples of filly used in a sentence.