Related Clues:

• Shut tightly
• Made watertight
• Not even ajar
• Word with ''up'' or ''down''
• Fastened
• Make it close?
• Securely closed
• What some lips may be
• See 2 Down
• Open-and-___ case
• Completely closed
• Sealed, say
• Not even cracked
• Closed up tight
• Securely sealed