Related Clues:

• Sotheby's action
• Fall asleep
• Indicate approval
• E-bay action
• Nonverbal approval
• Wynken, Blynken and --
• Signal of comprehension
• Action appropriate for this puzzle
• Listener's approval
• Declarer's action, in bridge
• Auction entry
• Companion of Winken and Blinken
• Betray inattention
• Mute assent
• Bridge turn