Answer: Winding.
Answer analysis:
This question mainly examines the basic concepts in electromagnetism. In electromagnetism, when we wind the electromagnet in the stator, the coil wire used has a special name, that is, "winding". The winding is the coil part of the electromagnet or motor used to generate a magnetic field. It is made of wires wound in circles. When current passes through these wires, a magnetic field is generated around the winding.
Therefore, the coil wire wound around the electromagnet in the stator is called "winding".
To sum up, the answer is: winding.