Synonyms for Whisker (same or very similar meaning)
WordNet sense 1 (a very small distance or space):
hair, hairsbreadth, hair's-breadthWordNet sense 2 (furnish with whiskers):
bewhiskerWordNet sense 3 (a long stiff hair growing from the snout or brow of most mammals as e.g. a cat):
vibrissa, sensory hairFrom the ODE community, based on WordNetadd/edit