pellicle

pellicle
    n 1: thin protective membrane in some protozoa
    

Pellicle \Pel"li*cle\, n. [L. pellicula, dim. of pellis skin:
   cf. F. pellicule.]
   1. A thin skin or film.
      [1913 Webster]

   2. (Chem.) A thin film formed on the surface of an
      evaporating solution.
      [1913 Webster]
    

70 Moby Thesaurus words for "pellicle":
      allantoic membrane, amnion, amniotic sac, arachnoid membrane,
      basement membrane, coat, coating, collop, conjuctiva, covering,
      cut, deal, disk, eardrum, enamel, facing, feuille, film, flap,
      foil, fold, fur, hymen, lacquer, lamella, lamina, laminated glass,
      laminated wood, lap, leaf, maidenhead, membrana serosa,
      membrana tympana, membrane, meninges, meninx, neurilemma, paint,
      pane, panel, patina, peel, pericardium, perineurium, plait, plank,
      plate, plating, pleura, ply, plywood, rasher, revetment,
      safety glass, scale, scum, serosa, sheet, skin, slab, slat, slice,
      table, tablet, tympanic membrane, tympanum, varnish, velum, veneer,
      wafer