1. [n]  a front that resembles a human nose (especially the front of an aircraft); "the nose of the rocket heated up on reentry"
2. [n]  the front or forward projection of a tool or weapon; "he ducked under the nose of the gun"
3. [n]  a projecting spout from which a fluid is discharged
4. [n]  the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals; "he has a cold in the nose"
5. [n]  a natural skill; "he has a nose for good deals"
6. [n]  the sense of smell (especially in animals); "the hound has a good nose"
7. [n]  a small distance; "my horse lost the race by a nose"
8. [v]  defeat by a narrow margin
9. [v]  rub noses
10. [v]  push or move with the nose
11. [v]  advance the forward part of with caution; "She nosed the car into the left lane"
12. [v]  catch the scent of; get wind of; "The dog nosed out the drugs"
13. [v]  search or inquire in a meddlesome way; "This guy is always nosing around the office"

Nose
Explains the functions of the different parts of the nose.

more details ...

1. \Nose\, n. [AS. nosu; akin to D. neus, G. nase, OHG. nasa,
   Icel. n["o]s, Sw. n["a]sa, Dan. n["a]se, Lith. nosis, Russ.
   nos', L. nasus, nares, Skr. n[=a]s[=a], n[=a]s. ? Cf.
   {Nasal}, {Nasturtium}, {Naze}, {Nostril}, {Nozzle}.]
   1. (Anat.) The prominent part of the face or anterior
      extremity of the head containing the nostrils and
      olfactory cavities; the olfactory organ. See {Nostril},
      and {Olfactory organ} under {Olfactory}.
   2. The power of smelling; hence, scent.
            We are not offended with a dog for a better nose
            than his master.                      --Collier.
   3. A projecting end or beak at the front of an object; a
      snout; a nozzle; a spout; as, the nose of a bellows; the
      nose of a teakettle.
   {Nose bit} (Carp.), a bit similar to a gouge bit, but having
      a cutting edge on one side of its boring end.
   {Nose hammer} (Mach.), a frontal hammer.
   {Nose hole} (Glass Making), a small opening in a furnace,
      before which a globe of crown glass is held and kept soft
      at the beginning of the flattening process.
   {Nose key} (Carp.), a fox wedge.
   {Nose leaf} (Zo["o]l.), a thin, broad, membranous fold of
      skin on the nose of many species of bats. It varies
      greatly in size and form.
   {Nose of wax}, fig., a person who is pliant and easily
      influenced. ``A nose of wax to be turned every way.''
      --Massinger
   {Nose piece}, the nozzle of a pipe, hose, bellows, etc.; the
      end piece of a microscope body, to which an objective is
      attached.
   {To hold}, {put}, or {bring one's nose to the grindstone}.
      See under {Grindstone}.
   {To lead by the nose}, to lead at pleasure, or to cause to
      follow submissively; to lead blindly, as a person leads a
      beast. --Shak.
   {To put one's nose out of joint}, to humiliate one's pride,
      esp. by supplanting one in the affections of another.
      [Slang]
   {To thrust one's nose into}, to meddle officiously in.
   {To wipe one's nose of}, to deprive of; to rob. [Slang]
   

2. \Nose\, v. t. [imp. & p. p. {Nosed}; p. pr. & vb. n.
   {Nosing}.]
   1. To smell; to scent; hence, to track, or trace out.
   2. To touch with the nose; to push the nose into or against;
      hence, to interfere with; to treat insolently.
            Lambs . . . nosing the mother's udder. --Tennyson.
            A sort of national convention, dubious in its nature
            . . . nosed Parliament in the very seat of its
            authority.                            --Burke.
   3. To utter in a nasal manner; to pronounce with a nasal
      twang; as, to nose a prayer. [R.] --Cowley.
   

3. \Nose\ (n[=o]z), v. i.
   1. To smell; to sniff; to scent. --Audubon.
   2. To pry officiously into what does not concern one.
   

4. \Nose\, v. t.
   1. To confront; be closely face to face or opposite to; meet.
   2. To furnish with a nose; as, to nose a stair tread.
   3. To examine with the nose or sense of smell.
   4. To make by advancing the nose or front end; as, the train
      nosed its way into the statio; (Racing Slang) to beat by
      (the length of) a nose.
   

5. \Nose\, v. i.
   To push or move with the nose or front forward.
         A train of cable cars came nosing along. --Hamlin
                                                  Garland.