A dimple in the chin; a devil within.

Related:

• Every invalid is a doctor.
  Irish...
• It is not a fish until it is on the bank.
  Irish...
• A heavy purse makes a light heart. --
  Irish...
• It is in the shelter of each other that people live.
  Irish...
• All sins cast long shadows.
  Irish...
• Better be quarreling than lonesome.
  Irish...
• God likes help when helping people. --
  Irish...
• One who is cowless must be his own dog. --
  Archaic Irish...
• It is better to be a coward for a minute than dead the rest of your life.
  Irish...