Possible Clues:

• Relax
• Break
• Relax a bit
• Remove half of them from Number 10 and relax
• Go on a break, or what the starts of 16-, 20-, 32-, 43-, and 57-Across can be called
• Chill for a while
• Fluffing first four shots may necessitate this rest
• Rest
• Rest a bit
• Have a short break