Quatrième is a classical ballet term meaning “fourth.” It is used to refer to fourth position, usually of the feet.
The term quatrième is used for a wide range of other ballet terms, but many teachers do not regularly use it.
For an example of using quatrième, a teacher may say “pirouette à la quatrième derrière” which would mean “pirouette to the fourth position back” which is another way of simply saying “pirouette and finish to the back.” This is the most common finish of a pirouette, especially in class.
