Compounds of 爪の垢

• 爪の垢
  (exp) (1) dirt under one's fingernails
  (2) shred (of decency, etc.)
  scrap
  bit
  smidgen
• 爪の垢を煎じて飲む
  (exp,v5m) to take a lesson from (a wise person)
  to follow in the footsteps of