The Collaborative International Dictionary of English v.0.48:

Dream \Dream\, v. t.
   To have a dream of; to see, or have a vision of, in sleep, or
   in idle fancy; -- often followed by an objective clause.
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         Your old men shall dream dreams.         --Acts ii. 17.
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         At length in sleep their bodies they compose,
         And dreamt the future fight.             --Dryden.
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         And still they dream that they shall still succeed.
                                                  --Cowper.
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   To dream away To dream out, To dream through, etc., to
      pass in revery or inaction; to spend in idle vagaries; as,
      to dream away an hour; to dream through life. " Why does
      Antony dream out his hours?" --Dryden.
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The Collaborative International Dictionary of English v.0.48:

Dream \Dream\ (dr[=e]m), n. [Akin to OS. dr[=o]m, D. droom, G.
   traum, Icel. draumr, Dan. & Sw. dr["o]m; cf. G. tr["u]gen to
   deceive, Skr. druh to harm, hurt, try to hurt. AS. dre['a]m
   joy, gladness, and OS. dr[=o]m joy are, perh., different
   words; cf. Gr. qry^los noise.]
   1. The thoughts, or series of thoughts, or imaginary
      transactions, which occupy the mind during sleep; a
      sleeping vision.
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            Dreams are but interludes which fancy makes.
                                                  --Dryden.
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            I had a dream which was not all a dream. --Byron.
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   2. A visionary scheme; a wild conceit; an idle fancy; a
      vagary; a revery; -- in this sense, applied to an
      imaginary or anticipated state of happiness; as, a dream
      of bliss; the dream of his youth.
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            There sober thought pursued the amusing theme,
            Till Fancy colored it and formed a dream. --Pope.
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            It is not them a mere dream, but a very real aim
            which they propose.                   --J. C.
                                                  Shairp.
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The Collaborative International Dictionary of English v.0.48:

Dream \Dream\, v. i. [imp. & p. p. Dreamed (dr[=e]md) or
   Dreamt (dr[e^]mt); p. pr. & vb. n. Dreaming.] [Cf. AS.
   dr[=e]man, dr[=y]man, to rejoice. See Dream, n.]
   1. To have ideas or images in the mind while in the state of
      sleep; to experience sleeping visions; -- often with of;
      as, to dream of a battle, or of an absent friend.
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   2. To let the mind run on in idle revery or vagary; to
      anticipate vaguely as a coming and happy reality; to have
      a visionary notion or idea; to imagine.
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            Here may we sit and dream
            Over the heavenly theme.              --Keble.
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            They dream on in a constant course of reading, but
            not digesting.                        --Locke.
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WordNet (r) 3.0 (2006):

dream
    n 1: a series of mental images and emotions occurring during
         sleep; "I had a dream about you last night" [syn: dream,
         dreaming]
    2: imaginative thoughts indulged in while awake; "he lives in a
       dream that has nothing to do with reality" [syn: dream,
       dreaming]
    3: a cherished desire; "his ambition is to own his own business"
       [syn: ambition, aspiration, dream]
    4: a fantastic but vain hope (from fantasies induced by the
       opium pipe); "I have this pipe dream about being emperor of
       the universe" [syn: pipe dream, dream]
    5: a state of mind characterized by abstraction and release from
       reality; "he went about his work as if in a dream"
    6: someone or something wonderful; "this dessert is a dream"
    v 1: have a daydream; indulge in a fantasy [syn: dream,
         daydream, woolgather, stargaze]
    2: experience while sleeping; "She claims to never dream"; "He
       dreamt a strange scene"