The Collaborative International Dictionary of English v.0.48:

Vague \Vague\ (v[=a]g), a. [Compar. Vaguer (v[=a]g"[~e]r);
   superl. Vaguest.] [F. vague, or L. vagus. See Vague, v.
   i.]
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   1. Wandering; vagrant; vagabond. [Archaic] "To set upon the
      vague villains." --Hayward.
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            She danced along with vague, regardless eyes.
                                                  --Keats.
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   2. Unsettled; unfixed; undetermined; indefinite; ambiguous;
      as, a vague idea; a vague proposition.
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            This faith is neither a mere fantasy of future
            glory, nor a vague ebullition of feeling. --I.
                                                  Taylor.
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            The poet turned away, and gave himself up to a sort
            of vague revery, which he called thought.
                                                  --Hawthorne.
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   3. Proceeding from no known authority; unauthenticated;
      uncertain; flying; as, a vague report.
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            Some legend strange and vague.        --Longfellow.
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   Vague year. See Sothiac year, under Sothiac.
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   Syn: Unsettled; indefinite; unfixed; ill-defined; ambiguous;
        hazy; loose; lax; uncertain.
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