A whisker is a thick, bristly hair that grows on an animal's face. Your cat's long whiskers actually help her to navigate in the dark.

You can also call a human's beard whiskers, but the word usually means the stiff hairs on the snout of an animal like a fox, a walrus, or a rat. In fact, most mammals have whiskers — and humans are the only primates who don't have them. This noun can also mean "a tiny amount," like when a disappointed voter says, "The other guy won by a whisker."

Definitions of whisker

n a long stiff hair growing from the snout or brow of most mammals as e.g. a cat

sensory hair, vibrissa
Type of:
a filamentous projection or process on an organism

n a very small distance or space

“they lost the election by a whisker
hair, hair's-breadth, hairsbreadth
Type of:
small indefinite amount, small indefinite quantity
an indefinite quantity that is below average size or magnitude

v furnish with whiskers

“a whiskered jersey”
Type of:
furnish, provide, render, supply
give something useful or necessary to

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