nosepiece

Noun

 * 1) Anything (originally a piece of armour) that protects the nose.
 * 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.
 * 1) The outer end or point of a pipe, bellows, etc.