Related Clues:
- Show approval - no dice at first
- Wordlessly express approval
- Say "yes" with your head
- Start to snooze, with 'off'
- Christie’s motion
- Signal ''OK''*
- Sign of approval, not quite from 21 across
- Approve gesturally
- Silently agree
- Signal with head
- Become drowsy, lecturer having turned up
- Acknowledgment, of a sort
- 'Wynken, Blynken, and --', a poem for children by Eugene Field
- Show of satisfaction
- Bit of recognition