What is the meaning of the word "nose"?

Definitions:

a front that resembles a human nose (especially the front of an aircraft) noun
- the nose of the rocket heated up on reentry
a natural skill at detecting something noun
- They had a nose for good deals.
a small distance noun
- my horse lost the race by a nose
a symbol of inquisitiveness noun
- keep your nose out of it
advance the forward part of with caution verb
- They nosed their car into the left lane.
the front or forward projection of a tool or weapon noun
- I ducked under the nose of the gun.
the sense of smell (especially in animals) noun
- the hound has a good nose