Related Clues:

• Auction bid, often
• Indicate one's OK
• Gangster retires in silence? It's a signal!
• Buddy of Wynken and Blynken
• Agree quietly
• Pitch-selecting gesture
• Tender proposal
• "Yes" signal
• Subtle auction motion
• Begin to doze off
• One way to bid
• Quick approval
• Motion 'yes'
• Wordless authorization
• Nomination