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).
      [1913 Webster]

            Go thy way, shew thyself to the priest. --Matt.
                                                  viii. 4.
      [1913 Webster]

            Nor want we skill or art from whence to raise
            Magnificence; and what can heaven show more?
                                                  --Milton.
      [1913 Webster]

   2. To exhibit to the mental view; to tell; to disclose; to
      reveal; to make known; as, to show one's designs.
      [1913 Webster]

            Shew them the way wherein they must walk. --Ex.
                                                  xviii. 20.
      [1913 Webster]

            If it please my father to do thee evil, then I will
            shew it thee, and send thee away.     --1 Sam. xx.
                                                  13.
      [1913 Webster]

   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.
      [1913 Webster]

   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.
      [1913 Webster]

            I 'll show my duty by my timely care. --Dryden.
      [1913 Webster]

   5. To bestow; to confer; to afford; as, to show favor.
      [1913 Webster]

            Shewing mercy unto thousands of them that love me.
                                                  --Ex. xx. 6.
      [1913 Webster]

   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.]
      [1913 Webster]