Related Clues:

• Reporter's source, at times
• Head shop purchase
• Unexpected info source
• Folk dancer's shoe, perhaps
• 'Danny Boy' musicmakers
• Plumbing supply
• Air problem
• Not hold water, say
• Puddle producer
• Holmes trademark
• Use completely
• Dutch shoe
• Radiator problem
• Singer's gift, colloquially
• Kiltie's instrument