The Collaborative International Dictionary of English v.0.48:

Nose \Nose\, v. t. [imp. & p. p. Nosed (n[=o]zd); p. pr. & vb.
   n. Nosing.]
   1. To smell; to scent; hence, to track, or trace out.
      [1913 Webster]

   2. To touch with the nose; to push the nose into or against;
      hence, to interfere with; to treat insolently.
      [1913 Webster]

            Lambs . . . nosing the mother's udder. --Tennyson.
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            A sort of national convention, dubious in its nature
            . . . nosed Parliament in the very seat of its
            authority.                            --Burke.
      [1913 Webster]

   3. To utter in a nasal manner; to pronounce with a nasal
      twang; as, to nose a prayer. [R.] --Cowley.
      [1913 Webster]

   4. To confront; be closely face to face or opposite to; meet.
      [Webster 1913 Suppl.]

   5. To furnish with a nose; as, to nose a stair tread.
      [Webster 1913 Suppl.]

   6. To examine with the nose or sense of smell.
      [Webster 1913 Suppl.]

   7. To make by advancing the nose or front end; as, the train
      nosed its way into the station;
      [Webster 1913 Suppl.]

   8. (Racing Slang) to beat by (the length of) a nose. Hence,
      to defeat in a contest by a small margin; also used in the
      form nose out.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

nose out
    v 1: recognize or detect by or as if by smelling; "He can smell
         out trouble" [syn: sniff out, scent out, smell out,
         nose out]