Filly (noun)

1. A young female horse, especially one less than four years old.
2. A girl or young woman, often used in a contemptuous or dismissive manner.

Origin:

Middle english fille, from old english fylle; akin to old high german filli filly.

Examples:

1. I bought a filly at the auction and plan to train her for racing.
2. The filly was a beautiful chestnut color with a white blaze on her forehead.
3. The young filly was full of energy and playfulness.
4. She was called a filly as a term of contempt by her classmates.
5. The filly was so fast that she won the race by a length.