Related Clues:

• Rapids phenomenon
• Drainage indicator
• Whirlpool or tornado
• MacDonald's frequent co-star
• MacDonald co-star
• Result of pulling the plug?
• Old MacDonald's song mate?
• Countertrend
• Certain air current
• Swirl of water
• Possible result of pulling the plug
• The swirl at the bottom of the tub, e.g.
• Bathtub swirl
• Miniature whirlpool
• Swirl in the stream