Coruscate

from WordNet (r) 3.0 (2006)

coruscate
    v 1: reflect brightly; "Unquarried marble sparkled on the
         hillside" [syn: {sparkle}, {scintillate}, {coruscate}]
    2: be lively or brilliant or exhibit virtuosity; "The musical
       performance sparkled"; "A scintillating conversation"; "his
       playing coruscated throughout the concert hall" [syn:
       {sparkle}, {scintillate}, {coruscate}]

from The Collaborative International Dictionary of English v.0.48

Coruscate \Cor"us*cate\ (k?r"?s-k?t or k?-r?s"k?r), v. i. [L.
   coruscare to flash, vibrate.]
   To glitter in flashes; to flash.

   Syn: To glisten; gleam; sparkle; radiate.
        [1913 Webster]