Related Clues:

• Go to sleep, with 'off'
• A way to do one's bidding
• Bob of hope, maybe
• Invitation
• Doze momentarily (with "off")
• Fall asleep (with "off")
• Agree wordlessly
• Signal of approval
• Drowse
• Christie's cry
• Offer a sum of money to buy
• Bobbleheads do it
• Approval of a sort
• Subtle assent
• Action on eBay