Commonly used to refer to the back side of something.
El perro se acostó en el dorso de la cama, disfrutando del calor del sol que entraba por la ventana.
The dog lay on the back of the bed, enjoying the warmth of the sun coming through the window.
El dorso de la mano es una parte del cuerpo que a menudo olvidamos cuidar.
The back of the hand is a part of the body that we often forget to take care of.