The Collaborative International Dictionary of English v.0.48:

Scintillate \Scin"til*late\, v. i. [imp. & p. p. Scintillated;
   p. pr. & vb. n. Scintillating.] [L. scintillare,
   scintillatum, from scintilla a spark. Cf. Stencil.]
   1. To emit sparks, or fine igneous particles.
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            As the electrical globe only scintillates when
            rubbed against its cushion.           --Sir W.
                                                  Scott.
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   2. To sparkle, as the fixed stars.
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