The Collaborative International Dictionary of English v.0.48:

Satin \Sat"in\, n. [F. satin (cf. Pg. setim), fr. It. setino,
   from seta silk, L. saeta, seta, a thick, stiff hair, a
   bristle; or possibly ultimately of Chinese origin; cf. Chin.
   sz-t["u]n, sz-twan. Cf. Sateen.]
   A silk cloth, of a thick, close texture, and overshot woof,
   which has a glossy surface.
   [1913 Webster]

         Cloths of gold and satins rich of hue.   --Chaucer.
   [1913 Webster]

   Denmark satin, a kind of lasting; a stout worsted stuff,
      woven with a satin twill, used for women's shoes.

   Farmer's satin. See under Farmer.

   Satin bird (Zool.), an Australian bower bird. Called also
      satin grackle.

   Satin flower (Bot.) See Honesty, 4.

   Satin spar. (Min.)
   (a) A fine fibrous variety of calcite, having a pearly
       luster.
   (b) A similar variety of gypsum.

   Satin sparrow (Zool.), the shining flycatcher (Myiagra
      nitida) of Tasmania and Australia. The upper surface of
      the male is rich blackish green with a metallic luster.

   Satin stone, satin spar.
      [1913 Webster]

WordNet (r) 3.0 (2006):

satin flower
    n 1: southeastern European plant cultivated for its fragrant
         purplish flowers and round flat papery silver-white
         seedpods that are used for indoor decoration [syn:
         honesty, silver dollar, money plant, satin flower,
         satinpod, Lunaria annua]