deplumation

from The Collaborative International Dictionary of English v.0.48

Deplumation \Dep`lu*ma"tion\, n. [See {Deplumate}.]
   1. The stripping or falling off of plumes or feathers. --Bp.
      Stillingfleet
      [1913 Webster]

   2. (Med.) A disease of the eyelids, attended with loss of the
      eyelashes. --Thomas.
      [1913 Webster]