nosepiece

noun5

1. •
   Anything (originally a piece of armour) that protects the nose.

   • At impact, the nosepiece of Phelps’s goggles snapped. — 2009
2. •
   An animal's noseband.
3. •
   The bridge between spectacle lenses that rests on the nose.
4. •
   The part of a microscope that holds the objectives.
5. •
   The outer end or point of a pipe, bellows, etc.