The term "плие" (plié) refers to a fundamental ballet movement where a dancer bends their knees while keeping their feet flat on the ground. This movement is essential for developing strength and flexibility in the legs, as well as for preparing for jumps and other movements. Pliés can be performed in various positions, including first position, second position, and fifth position. In ballet classes, pliés are often practiced at the beginning to warm up the body. There are two main types: demi-plié, which involves bending the knees halfway, and grand plié, where the knees bend fully. Mastering plié is crucial for any ballet dancer, as it forms the basis for many other techniques.