Possible Clues:

• Curb criminal element that's gripping area
• If it's wrong, I cannot check
• Hold criminal in on act
• Hold in
• Keep the lid on
• “The Brain—is wider than the Sky— / For—put them side by side— / The one the other will ____” (Emily Dickinson)
• Hold crushed tin can, nothing inside
• Have as a component
• Kettle in action controversially before end of demonstration
• I cannot (anag) — hold back