Sprite
From Director Online Wiki
Sprites are instances of cast members on the Stage. Sprites have their own set of properties, including:
Size and location
Orientation
Color
Appearance
Score data
Many of these properties can be animated over a frame range.
In the Score, the sprite channels represent how sprites are displayed and controlled over time. Sprite channels are numbered, allowing visible media to be layered on the Stage The higher the sprite number, the higher the sprite will be in the layer order. Sprite channels can also be named (in MX 2004).