Source : Webster's Revised Unabridged Dictionary (1913)

Sheen \Sheen\, n.
   Brightness; splendor; glitter. ``Throned in celestial
   sheen.'' --Milton.

Sheen \Sheen\, a. [OE. sehene, AS. sci['e]ne, sc?ne, sc?ne,
   splendid, beautiful; akin to OFries. sk?ne, sk?ne, OS. sc?ni,
   D. schoon, G. sch["o]n, OHG. sc?ni, Goth, skanus, and E.
   shew; the original meaning being probably, visible, worth
   seeing. It is not akin to E. shine. See {Shew}, v. t.]
   Bright; glittering; radiant; fair; showy; sheeny. [R., except
   in poetry.]

         This holy maiden, that is so bright and sheen.
                                                  --Chaucer.

         Up rose each warrier bold and brave, Glistening in
         filed steel and armor sheen.             --Fairfax.

Sheen \Sheen\, v. i.
   To shine; to glisten. [Poetic]

         This town, That, sheening far, celestial seems to be.
                                                  --Byron.

Source : WordNet®

sheen
     n : the visual property of something that shines with reflected
         light [syn: {shininess}, {luster}, {lustre}]