Related Clues:

• 'The sky's the ___!'
• Restrict; extremity
• Fly-in mail, trend used off and on with restrictions
• Small child stuck in helmet that's narrow
• Maximum capacity
• Set boundaries for
• Impose a cap on
• Word after 'time' or 'speed'
• 'I've reached my ___!'
• Produced fabricated info about American university
• Border control
• Bound in leather, instruction from the top university
• Short song about US university
• In short supply on all sides today
• Poker game specification