Definition of washes:
(v) :
(transitive) To clean with water.
(v) :
(transitive) To carry away or erode by the force of water in motion.
(v) :
(intransitive) To be eroded or carried away by the action of water.
(v) :
(mining) To separate valuable material (such as gold) from worthless material by the action of flowing water.
(v) :
(intransitive) To clean oneself with water.
(v) :
(transitive) To cover with water or any liquid; to wet; to fall on and moisten.