means The facial organ used for breathing and smelling, sitting between the eyes and the mouth.

from From Old English 'nosu,' rooted in the Proto-Germanic '*nuso' and the older Proto-Indo-European '*nas-' — a sound-shape that gave Latin 'nasus' (whence 'nasal') and the 'nos' lurking in 'nostril' (literally 'nose-hole'). It's one of those ancient body-words that barely changed over thousands of years; the thing on your face has been called something very close to 'nose' since long before English existed.