Related Clues:

• Tennis ball fuzz
• Drop off for a while
• Take a time out?
• Daydreamer's activity?
• It's no deep slumber
• Catch a few Zs
• A few Z's
• Preschool break
• Midday refresher
• Brief lie-down
• Fail as a night guard, say
• 40 winks, collectively
• Drift off for a bit
• Tour break activity
• Catch a few z's on tour