Related Clues:
- What a bobblehead doll will do
- Start to drowse
- Voiceless assent
- Companion of Wynken and Blynken
- Cain's destination
- Whither Cain fled
- Wynken and Blynken's pal
- Bobblehead movement
- 'Wynken, Blynken and --'
- Wordless acknowledgment
- React to boredom, perhaps
- Indicate "yes" silently
- Sleep precursor
- Signal agreement
- Silent indication of approval