The Collaborative International Dictionary of English v.0.48:

Fuse \Fuse\ (f[=u]z), v. t. [imp. & p. p. Fused (f[=u]zd); p.
   pr. & vb. n. Fusing.] [L. fusus, p. p. of fundere to pour,
   melt, cast. See Foundo to cast, and cf. Futile.]
   1. To liquefy by heat; to render fluid; to dissolve; to melt.
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   2. To unite or blend, as if melted together.
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            Whose fancy fuses old and new.        --Tennyson.
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