= process by which the human scalp loses hair

= causative action by which someone pulls out hair, feathers, or wings

literally: to be rubbed bare; hence: = process by which skin of the shoulder is damaged as a result of carrying heavy loads

= causative action by which someone rubs a metal object until it starts reflecting light

literally: polished; hence: = state in which the human body is so smooth that it reflects light, as if it has been polished