Source : Webster's Revised Unabridged Dictionary (1913)

Premonition \Pre`mo*ni"tion\, n. [L. praemonitio. See
   {Premonish}.]
   Previous warning, notice, or information; forewarning; as, a
   premonition of danger.

Source : WordNet®

premonition
     n 1: a feeling of evil to come; "a steadily escalating sense of
          foreboding"; "the lawyer had a presentiment that the
          judge would dismiss the case" [syn: {foreboding}, {presentiment},
           {boding}]
     2: an early warning about a future event [syn: {forewarning}]