Related Clues:

• Sleep (slang)
• Close(d)
• Push to
• Completely closed, as a door
• A little house close to the south
• Clam (up)
• Sealed up
• Tightly closed
• Fastened tightly
• Latched, say
• Securely latched
• Turn (off)
• Turned (off)
• Seal off
• Stopped operating, with "down"