"Ankle-high" refers to a measurement that indicates something reaches up to the ankle, typically around 6 to 8 inches from the ground. This term is often used to describe the height of various objects, such as boots, grass, or fences. In fashion, ankle-high footwear, like ankle boots, is popular for its versatility and style. These shoes can be worn with different outfits, making them suitable for various occasions, from casual outings to more formal events.