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1) any of the stiff hairs that are located esp. about the nostrils or on other parts of the face in many mammals and that often serve as tactile organs
2) any of the stiff hairs growing within the nostrils that serve to impede the inhalation of foreign substances
vi·bris·sal -əl adj
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n. (pl. vibrissae)
a stiff coarse hair, especially one of the stiff hairs that lie just inside the nostrils.
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vi·bris·sa (vi-brisґə) [L.] singular of vibrissae.Medical dictionary. 2011.