The Collaborative International Dictionary of English v.0.48:

Show \Show\, v. t. [imp. Showed; p. p. Shownor Showed; p.
   pr. & vb. n. Showing. It is sometimes written shew,
   shewed, shewn, shewing.] [OE. schowen, shewen, schewen,
   shawen, AS. sce['a]wian, to look, see, view; akin to OS.
   scaw?n, OFries. skawia, D. schouwen, OHG. scouw?n, G.
   schauen, Dan. skue, Sw. sk?da, Icel. sko?a, Goth. usskawjan
   to waken, skuggwa a mirror, Icel. skuggy shade, shadow, L.
   cavere to be on one's guard, Gr. ??? to mark, perceive, hear,
   Skr. kavi wise. Cf. Caution, Scavenger, Sheen.]
   1. To exhibit or present to view; to place in sight; to
      display; -- the thing exhibited being the object, and
      often with an indirect object denoting the person or thing
      seeing or beholding; as, to show a house; show your
      colors; shopkeepers show customers goods (show goods to
      customers).
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            Go thy way, shew thyself to the priest. --Matt.
                                                  viii. 4.
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            Nor want we skill or art from whence to raise
            Magnificence; and what can heaven show more?
                                                  --Milton.
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   2. To exhibit to the mental view; to tell; to disclose; to
      reveal; to make known; as, to show one's designs.
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            Shew them the way wherein they must walk. --Ex.
                                                  xviii. 20.
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            If it please my father to do thee evil, then I will
            shew it thee, and send thee away.     --1 Sam. xx.
                                                  13.
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   3. Specifically, to make known the way to (a person); hence,
      to direct; to guide; to asher; to conduct; as, to show a
      person into a parlor; to show one to the door.
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   4. To make apparent or clear, as by evidence, testimony, or
      reasoning; to prove; to explain; also, to manifest; to
      evince; as, to show the truth of a statement; to show the
      causes of an event.
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            I 'll show my duty by my timely care. --Dryden.
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   5. To bestow; to confer; to afford; as, to show favor.
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            Shewing mercy unto thousands of them that love me.
                                                  --Ex. xx. 6.
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   To show forth, to manifest; to publish; to proclaim.

   To show his paces, to exhibit the gait, speed, or the like;
      -- said especially of a horse.

   To show off, to exhibit ostentatiously.

   To show up, to expose. [Colloq.]
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The Collaborative International Dictionary of English v.0.48:

Showing \Show"ing\, n.
   1. Appearance; display; exhibition.
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   2. Presentation of facts; statement. --J. S. Mill.
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WordNet (r) 3.0 (2006):

showing
    n 1: the display of a motion picture [syn: screening,
         showing, viewing]
    2: something shown to the public; "the museum had many exhibits
       of oriental art" [syn: display, exhibit, showing]

Moby Thesaurus II by Grady Ward, 1.0:

150 Moby Thesaurus words for "showing":
   Christophanic, Satanophanic, angelophanic, apocalyptic, apparent,
   apparition, appearance, appearing, arising, avatar, bared,
   beholdable, betraying, characterization, coming, coming into being,
   coming-forth, demonstrating, demonstration, demonstrative,
   denomination, denotation, denudated, denuded, designation,
   detectable, differentiation, discernible, disclosed, disclosing,
   disclosive, disclosure, display, displaying, divested, emergence,
   enactment, epiphanic, epiphany, evident, evidential, evincive,
   exhibit, exhibition, exhibitive, exposed, exposed to view,
   exposing, exposition, expositional, expository, exposure,
   expression, expressive, eye-opening, face, fingering, forthcoming,
   guise, hanging out, hint, identification, in evidence,
   in full view, in plain sight, in view, incarnating, incarnation,
   incarnational, indication, indicative, indicativeness, indicatory,
   insight, issuance, laid bare, manifest, manifestation,
   manifestative, materialization, materializing, meaning, naked,
   naming, noticeable, observable, occurrence, open, open to view,
   opening, ostentation, out, outcropping, perceivable, perceptible,
   performance, picking out, pneumatophanic, pointing, pointing out,
   pointing to, presentation, presentational, presentment, production,
   projection, promulgatory, realization, recognizable, record,
   representation, retrospective, revealed, revealing, revelation,
   revelational, revelatory, rise, rising, seeable, seeming,
   selection, semblance, show, showing forth, signification,
   simulacrum, specification, stripped, suggestion, symptomaticness,
   talkative, theophanic, theophany, to be seen, unclouded,
   unconcealed, uncovered, undisguised, unfolding, unfoldment,
   unhidden, unveiled, unveiling, varnishing day, vernissage,
   viewable, visible, visual, witnessable