The Collaborative International Dictionary of English v.0.48:

Solace \Sol"ace\, v. t. [imp. & p. p. Solaced; p. pr. & vb. n.
   Solacing.] [OF. solacier, soulacier, F. solacier, LL.
   solatiare. See Solace, n.]
   1. To cheer in grief or under calamity; to comfort; to
      relieve in affliction, solitude, or discomfort; to
      console; -- applied to persons; as, to solace one with the
      hope of future reward.
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   2. To allay; to assuage; to soothe; as, to solace grief.
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   Syn: To comfort; assuage; allay. See Comfort.
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