The Collaborative International Dictionary of English v.0.48:

Vision \Vi"sion\, v. t. [imp. & p. p. Visioned; p. pr. & vb.
   n. Visioning.]
   To see in a vision; to dream.
   [1913 Webster]

         For them no visioned terrors daunt,
         Their nights no fancied specters haunt.  --Sir W.
                                                  Scott.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Vision \Vi"sion\, n. [OE. visioun, F. vision, fr. L. visio, from
   videre, visum, to see: akin to Gr. ? to see, ? I know, and E.
   wit. See Wit, v., and cf. Advice, Clairvoyant, Envy,
   Evident, Provide, Revise, Survey, View, Visage,
   Visit.]
   1. The act of seeing external objects; actual sight.
      [1913 Webster]

            Faith here is turned into vision there. --Hammond.
      [1913 Webster]

   2. (Physiol.) The faculty of seeing; sight; one of the five
      senses, by which colors and the physical qualities of
      external objects are appreciated as a result of the
      stimulating action of light on the sensitive retina, an
      expansion of the optic nerve.
      [1913 Webster]

   3. That which is seen; an object of sight. --Shak.
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   4. Especially, that which is seen otherwise than by the
      ordinary sight, or the rational eye; a supernatural,
      prophetic, or imaginary sight; an apparition; a phantom; a
      specter; as, the visions of Isaiah.
      [1913 Webster]

            The baseless fabric of this vision.   --Shak.
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            No dreams, but visions strange.       --Sir P.
                                                  Sidney.
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   5. Hence, something unreal or imaginary; a creation of fancy.
      --Locke.
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   Arc of vision (Astron.), the arc which measures the least
      distance from the sun at which, when the sun is below the
      horizon, a star or planet emerging from his rays becomes
      visible.

   Beatific vision (Theol.), the immediate sight of God in
      heaven.

   Direct vision (Opt.), vision when the image of the object
      falls directly on the yellow spot (see under Yellow);
      also, vision by means of rays which are not deviated from
      their original direction.

   Field of vision, field of view. See under Field.

   Indirect vision (Opt.), vision when the rays of light from
      an object fall upon the peripheral parts of the retina.

   Reflected vision, or Refracted vision, vision by rays
      reflected from mirrors, or refracted by lenses or prisms,
      respectively.

   Vision purple. (Physiol.) See Visual purple, under
      Visual.
      [1913 Webster]

WordNet (r) 3.0 (2006):

vision
    n 1: a vivid mental image; "he had a vision of his own death"
    2: the ability to see; the visual faculty [syn: sight,
       vision, visual sense, visual modality]
    3: the perceptual experience of seeing; "the runners emerged
       from the trees into his clear vision"; "he had a visual
       sensation of intense light" [syn: vision, visual
       sensation]
    4: the formation of a mental image of something that is not
       perceived as real and is not present to the senses; "popular
       imagination created a world of demons"; "imagination reveals
       what the world could be" [syn: imagination,
       imaginativeness, vision]
    5: a religious or mystical experience of a supernatural
       appearance; "he had a vision of the Virgin Mary"

Moby Thesaurus II by Grady Ward, 1.0:

186 Moby Thesaurus words for "vision":
   Masan, Vorstellung, apocalypse, apparition, appearance, astral,
   astral spirit, bad dream, bamboozlement, banshee, befooling,
   bluffing, brainchild, brown study, bubble, calculated deception,
   chimera, circumvention, conceive, concept, conception,
   conceptualization, conning, control, daydream, deceiving,
   deception, deceptiveness, defrauding, delirium, delusion,
   delusiveness, departed spirit, disembodied spirit, dream, dupery,
   duppy, dybbuk, eidetic image, eidolon, enmeshment, ensnarement,
   entanglement, entrapment, envisage, envisaging, envision,
   envisioning, epitome, eye, eyeful, eyesight, fallaciousness,
   fallacy, false image, falseness, fancy, fantasque, fantasy,
   feature, fiction, figment, figure, flimflam, flimflammery,
   fond illusion, fooling, foresight, foresightedness, form, ghost,
   grateful dead, guide, hallucination, hant, haunt, hoodwinking,
   idea, idle fancy, idolum, illusion, image, imagery, imagery study,
   imagination, imagine, imaging, imagining, imagism,
   imagistic poetry, immateriality, incorporeal, incorporeal being,
   incorporeity, incubus, insight, insubstantial image, invention,
   kidding, larva, lemures, lifelike image, maggot, make-believe,
   manes, materialization, mental image, mental picture,
   mental representation, mirage, muse, myth, nightmare,
   objectification, oni, oracle, outwitting, overreaching, perception,
   perspective, phantasm, phantasma, phantasmagoria, phantom, phasm,
   phenomenon, picture, picturing, pipe dream, plan, poem,
   poetic imagery, poltergeist, presence, prophecy, putting on,
   realize, revenant, reverie, romance, scheme, seeing,
   self-deception, shade, shadow, shape, shrouded spirit, sick fancy,
   sight, snow job, song and dance, specter, spectral ghost, spirit,
   spoofery, spoofing, spook, sprite, subterfuge, swindling,
   theophany, thick-coming fancies, thing of beauty, trickiness,
   tricking, trip, understanding, unsubstantiality, vapor,
   victimization, view, visual image, visualization, visualize,
   waking dream, walking dead man, wandering soul, whim, whimsy,
   wildest dream, wildest dreams, willful misconception,
   wishful thinking, word-painting, wraith, zombie



Easton's 1897 Bible Dictionary:

Vision
   (Luke 1:22), a vivid apparition, not a dream (comp. Luke 24:23;
   Acts 26:19; 2 Cor. 12:1).