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 …

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 …

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 …

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 …

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 …

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, …

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