Related Clues:

• One who's close-mouthed
• Soup or sandwich ingredient
• Marine mollusk
• Untalkative one
• Secretive sort
• Quahog, e.g.
• Silent sort
• Boat mover
• Chowder type
• Dinghy propeller
• Scull mover
• Crew team member
• Paradigm of happiness
• Chowder bit
• Coxswain's charge