noun
- young female horses, typically under four years old
Examples
- The stable housed several fillies that would be trained for racing.
- Two fillies grazed peacefully in the meadow.
- The breeder was proud of his prize-winning fillies.
- Young fillies require careful training and gentle handling.
- The fillies will mature into strong mares in a few years.
- Three fillies were born on the farm this spring.