vibrissa /vɪˈbɹɪsə/ noun3 •Any of the tactile whiskers on the nose of an animal such as a cat.There are also long hairs inside each ear and sometimes on its tip, and about a dozen very long and strong hairs—the whiskers or vibrissae— are placed on each upper lip. — 1881 •Any similar feather near the mouth of some birds. •[in the plural] A thick hair found inside the nostrils of humans and other mammals. formsvibrissae