nosepiece

/N OW1 Z P IY0 S/
noun
  1. 1

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

  2. 2

    An animal's noseband.

  3. 3

    The bridge between spectacle lenses that rests on the nose.

  4. 4

    The part of a microscope that holds the objectives.

  5. 5

    The outer end or point of a pipe, bellows, etc.

Source: https://en.wiktionary.org/wiki/nosepiece