Brown Driver Briggs

 1. to defile, pollute, desecrate
  1) (Niphal) to be defiled, be polluted
  2) (Piel) to pollute, desecrate
  3) (Pual) to be desecrated (of removal from priesthood)
  4) (Hiphil) to pollute, stain
  5) (Hithpael) to defile oneself