Related Clues:

• Shaving device
• Household blade
• It may be cutting things close
• Implement for removing hair
• Common cutter
• Barbershop staple
• It might prevent a shadow
• Block for sharpening chisels, etc
• Mustache remover
• Philosophical principle that rules out unlikely explanations
• Catching last of fuzz, howl when that's pulled back?
• Reportedly lift a shaving implement
• Tool-sharpening aid
• Product from Harry’s
• Keen-edged instrument