nosepiece
/ˈnoʊzpiːs/
noun
- A part of a device or object that fits over or covers the nose, such as on eyeglasses, a helmet, or a gas mask.
- The helmet's nosepiece protected his face during the race.
- The nosepiece of his glasses was adjustable for a more comfortable fit.
- She cleaned the nosepiece of the gas mask before putting it on.
- The part of a microscope or other optical instrument that holds the lenses or objectives.
- A dirty nosepiece can blur the image in a microscope.
- He carefully attached the new lens to the nosepiece of the telescope.
- The scientist rotated the nosepiece to switch to a higher magnification.