Source : Webster's Revised Unabridged Dictionary (1913)

Obscure \Ob*scure"\, v. i.
   To conceal one's self; to hide; to keep dark. [Obs.]

         How! There's bad news. I must obscure, and hear it.
                                                  --Beau. & Fl.

Obscure \Ob*scure"\, n.
   Obscurity. [Obs.] --Milton.

Obscure \Ob*scure"\, v. t. [imp. & p. p. {Obscured}; p. pr. &
   vb. n. {Obscuring}.] [L. obscurare, fr. obscurus: cf. OF.
   obscurer. See {Obscure}, a.]
   To render obscure; to darken; to make dim; to keep in the
   dark; to hide; to make less visible, intelligible, legible,
   glorious, beautiful, or illustrious.

         They are all couched in a pit hard by Herne's oak, with
         obscured lights.                         --Shak.

         Why, 't is an office of discovery, love, And I should
         be obscured.                             --Shak.

         There is scarce any duty which has been so obscured by
         the writings of learned men as this.     --Wake.

         And seest not sin obscures thy godlike frame? --Dryden.

Obscure \Ob*scure"\, a. [Compar. {Obscurer}; superl.
   {Obscurest}.] [L. obscurus, orig., covered; ob- (see {Ob-}) +
   a root probably meaning, to cover; cf. L. scutum shield, Skr.
   sku to cover: cf.F. obscur. Cf.{Sky}.]
   1. Covered over, shaded, or darkened; destitute of light;
      imperfectly illuminated; dusky; dim.

            His lamp shall be put out in obscure darkness.
                                                  --Prov. xx.
                                                  20.

   2. Of or pertaining to darkness or night; inconspicuous to
      the sight; indistinctly seen; hidden; retired; remote from
      observation; unnoticed.

            The obscure bird Clamored the livelong night.
                                                  --Shak.

            The obscure corners of the earth.     --Sir J.
                                                  Davies.

   3. Not noticeable; humble; mean. ``O base and obscure
      vulgar.'' --Shak. ``An obscure person.'' --Atterbury.

   4. Not easily understood; not clear or legible; abstruse or
      blind; as, an obscure passage or inscription.

   5. Not clear, full, or distinct; clouded; imperfect; as, an
      obscure view of remote objects.

   {Obscure rays} (Opt.), those rays which are not luminous or
      visible, and which in the spectrum are beyond the limits
      of the visible portion.

   Syn: Dark; dim; darksome; dusky; shadowy; misty; abstruse;
        intricate; difficult; mysterious; retired; unnoticed;
        unknown; humble; mean; indistinct.

Source : WordNet®

obscure
     adj 1: not clearly understood or expressed; "an obscure turn of
            phrase"; "an impulse to go off and fight certain
            obscure battles of his own spirit"-Anatole Broyard;
            "their descriptions of human behavior become vague,
            dull, and unclear"- P.A.Sorokin; "vague...forms of
            speech...have so long passed for mysteries of
            science"- John Locke [syn: {vague}]
     2: marked by difficulty of style or expression; "much that was
        dark is now quite clear to me"; "those who do not
        appreciate Kafka's work say his style is obscure" [syn: {dark}]
     3: difficult to find; "hidden valleys"; "a hidden cave"; "an
        obscure retreat" [syn: {hidden}]
     4: not famous or acclaimed; "an obscure family"; "unsung heroes
        of the war" [syn: {unknown}, {unsung}]
     5: not drawing attention; "an unnoticeable cigarette burn on
        the carpet"; "an obscure flaw" [syn: {unnoticeable}]
     6: remote and separate physically or socially; "existed over
        the centuries as a world apart"; "preserved because they
        inhabited a place apart"- W.H.Hudson; "tiny isolated
        villages remote from centers of civilization"; "an obscure
        village" [syn: {apart(p)}, {isolated}]

obscure
     v 1: make less visible or unclear; "The stars are obscured by the
          clouds" [syn: {befog}, {becloud}, {obnubilate}, {haze
          over}, {fog}, {cloud}, {mist}]
     2: make unclear, indistinct, or blurred; "Her remarks confused
        the debate"; "Their words obnubilate their intentions"
        [syn: {confuse}, {blur}, {obnubilate}]
     3: make obscure or unclear; "The distinction was obscured"
        [syn: {bedim}, {overcloud}]
     4: make undecipherable or imperceptible by obscuring or
        concealing; "a hidden message"; "a veiled threat" [syn: {blot
        out}, {obliterate}, {veil}, {hide}]
     5: make difficult to perceive by sight; "The foliage of the
        huge tree obscures the view of the lake" [syn: {benight},
        {bedim}]

Source : Free On-Line Dictionary of Computing

OBSCURE
     
        "A Formal Description of the Specification Language OBSCURE",
        J.  Loeckx, TR A85/15, U Saarlandes, Saarbrucken, 1985.
     
        [{Jargon File}]