Related Clues:

• Flush, say
• It makes waves
• Paddle kin
• Audience response
• Implement at Henley
• Use it to make waves
• Regatta contestant
• Crew's control?
• Row the boat
• Lifeboat item
• Clock sweeper
• Backwash creator
• Galley propeller
• Hand-operated propeller
• Move a gig