dermatome  
noun [ C ]  medical specialized uk/ˈdɜːm.ə.teʊm/ us/ˈdɝːm.əˌtoʊm/
  (SKIN)     
  皮区
an area of the skin supplied by a single spinal nerve
   (TOOL)     
 植皮刀,皮刀
a tool used to take very thin slices of skin from one part of the body to repair skin in another area