Related Clues:

• Signify agreement
• Move head in agreement
• Indicate agreement (or sleepiness!)
• Offer a price
• Show agreement (or sleepiness?)
• Order — offer
• Approval for university teacher from the right
• "Yes" gesture
• Discreet signal
• "The Price Is Right" action
• 'Wynken, Blynken, and ___' (Eugene Field poem)
• Signal to the auctioneer
• Drop (off)
• Positive gesture
• Save one's breath, maybe?