The Collaborative International Dictionary of English v.0.48:

Dispel \Dis*pel"\, v. t. [imp. & p. p. Dispelled; p. pr. & vb.
   n. Dispelling.] [L. dispellere; dis- + pellere to push,
   drive. See Pulse a beating.]
   To drive away by scattering, or so to cause to vanish; to
   clear away; to banish; to dissipate; as, to dispel a cloud,
   vapors, cares, doubts, illusions.
   [1913 Webster]

         [Satan] gently raised
         their fainting courage, and dispelled their fears.
                                                  --Milton.
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         I saw myself the lambent easy light
         Gild the brown horror, and dispel the night. --Dryden.
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