The Collaborative International Dictionary of English v.0.48:

Augur \Au"gur\, v. i. [imp. & p. p. Augured; p. pr. & vb. n.
   Auguring.]
   1. To conjecture from signs or omens; to prognosticate; to
      foreshow.
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            My auguring mind assures the same success. --Dryden.
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   2. To anticipate, to foretell, or to indicate a favorable or
      an unfavorable issue; as, to augur well or ill.
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The Collaborative International Dictionary of English v.0.48:

Augur \Au"gur\, v. t.
   To predict or foretell, as from signs or omens; to betoken;
   to presage; to infer.
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         It seems to augur genius.                --Sir W.
                                                  Scott.
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         I augur everything from the approbation the proposal
         has met with.                            --J. F. W.
                                                  Herschel.
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   Syn: To predict; forebode; betoken; portend; presage;
        prognosticate; prophesy; forewarn.
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The Collaborative International Dictionary of English v.0.48:

Augur \Au"gur\, n. [L. Of uncertain origin: the first part of
   the word is perh. fr. L. avis bird, and the last syllable,
   gur, equiv. to the Skr. gar to call, akin to L. garrulus
   garrulous.]
   1. (Rom. Antiq.) An official diviner who foretold events by
      the singing, chattering, flight, and feeding of birds, or
      by signs or omens derived from celestial phenomena,
      certain appearances of quadrupeds, or unusual occurrences.
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   2. One who foretells events by omens; a soothsayer; a
      diviner; a prophet.
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            Augur of ill, whose tongue was never found
            Without a priestly curse or boding sound. --Dryden.
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WordNet (r) 3.0 (2006):

augur
    n 1: (ancient Rome) a religious official who interpreted omens
         to guide public policy [syn: augur, auspex]
    v 1: indicate by signs; "These signs bode bad news" [syn:
         bode, portend, auspicate, prognosticate, omen,
         presage, betoken, foreshadow, augur, foretell,
         prefigure, forecast, predict]
    2: predict from an omen