Related Clues:

• Gumption
• Leaf unit
• It's often italicized
• Put a lid on
• Lord or earl, e.g.
• Doctor's interruption
• Flip (through)
• See 30-Across
• Dow Jones Average, e.g.
• Proof of purchase
• Errand runner
• It may change with a promotion
• Coward's lack
• Webmaster's creation
• Part of a spine, usually