Related Clues:

• Break
• Raised fiber
• Zero hour for Will Kane, in a film
• Not pay attention
• Lunch time, maybe
• Rest
• Nod off
• See 20-Across
• See 26-Across
• More than nod
• Alcove
• When a factory whistle blows
• Meal
• Twelve ___
• See 37-Across