The Collaborative International Dictionary of English v.0.48:

Eclipse \E*clipse"\, v. t. [imp. & p. p. Eclipsed
   ([-e]*kl[i^]pst"); p. pr. & vb. n. Eclipsing.]
   1. To cause the obscuration of; to darken or hide; -- said of
      a heavenly body; as, the moon eclipses the sun.
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   2. To obscure, darken, or extinguish the beauty, luster,
      honor, etc., of; to sully; to cloud; to throw into the
      shade by surpassing. "His eclipsed state." --Dryden.
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            My joy of liberty is half eclipsed.   --Shak.
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