Whisker

n. one hair of the mustache or beard; one facial hair; long facial bristles near the mouth of an animal (i.e. cat, mouse, etc.)

Vibrissae (singular: vibrissa), or whiskers, are specialized hairs, usually employed for tactile sensation, but can also refer to the stiff feathers near the mouths of some birds. Vibrissae hairs commonly grow around the nostrils and other parts of the face in most mammals, commonly on cats as 'whiskers', as well as on the forelegs and feet. Vibrissae are usually thicker and stiffer than other types of hair.
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Vibrissa /vi·bris·sa/ [L.] a long coarse hair, such as those growing in the vestibule of the nose. vi·bris·sa n. pl. vi·bris·sae 1. [more]Whisker - Community and Resources

Noun
1. a very small distance or space; "they escaped by a hair's-breadth"; "they lost the election by a whisker"
(synonym) hair's-breadth, hairsbreadth, hair
(hypernym) small indefinite quantity, small indefinite amount
2. a long stiff hair growing from the snout or brow of most mammals as e.g. a cat
(synonym) vibrissa, sensory hair
(hypernym) hair
(derivation) bewhisker
Verb
1. furnish with whiskers; "a whiskered jersey"
(synonym) bewhisker
(hypernym) supply, provide, render, furnish
(derivation) vibrissa, sensory hair

n. trichite, a kind of crystallite resembling a bunch of hairs