1. (Science: anatomy) The prominent part of the face or anterior extremity of the head containing the nostrils and olfactory cavities; the olfactory organ. See Nostril, and olfactory organ under Olfactory.
3. A projecting end or beak at the front of an object; a snout; a nozzle; a spout; as, the nose of a bellows; the nose of a teakettle. Nose bit, a thin, broad, membranous fold of skin on the nose of many species of bats. It varies greatly in size and form. Nose of wax, fig, a person who is pliant and easily influenced. A nose of wax to be turned every way. Nose piece, the nozzle of a pipe, hose, bellows, etc.; the end piece of a microscope body, to which an objective is attached. To hold, put, or bring one's nose to the grindstone. See Grindstone. To lead by the nose, to lead at pleasure, or to cause to follow submissively; to lead blindly, as a person leads a beast. To put one's nose out of joint, to humiliate one's pride, especially. By supplanting one in the affections of another. To thrust one's nose into, to meddle officiously in. To wipe one's nose of, to deprive of; to rob.
Origin: AS. Nosu; akin to D. Neus, G. Nase, OHG. Nasa, Icel. Nos, Sw. Nasa, Dan. Nase, Lith. Nosis, Russ. Nos', L. Nasus, nares, Skr. Nasa, nas. Cf. Nasal, Nasturtium, Naze, Nostril, Nozzle.
Source: Websters Dictionary The organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals; he has a cold in the nose.The projection on a vertebrates face that is involved in gathering a sense of smell from the external environment.