British Dictionary definitions for by-a-whisker
Word Origin and History for by-a-whisker
"hair of a man's face" (usually plural), c.1600, originally a playful formation, from Middle English wisker "anything that whisks or sweeps" (early 15c.); see whisk (v.). In reference to animal lip hair, recorded from 1670s.
Idioms and Phrases with by-a-whisker
see by a hair (whisker); win by a nose (whisker).