Related Clues:

• Pipe blocker
• Secrecy breach
• Drain pain
• With 15-Down, hangs on the line
• Get blocked up
• Reporter's source, at times
• Cause of an icicle
• Unexpected info source
• Folk dancer's shoe, perhaps
• Intermittent trickle
• IV
• Air problem
• Not hold water, say
• Puddle producer
• Dutch shoe