Related Clues:

• Military action?
• Private address?
• Stadium motion
• Respectful gesture
• Bleacherites' choreography
• Thumbs up, e.g.
• Greet the general
• What a surfer rides
• Breaker
• Acknowledge the crowd
• Surfboard support
• Surfer's surface
• Onslaught
• Whitecap, e.g.
• Greet, in a way