1. Ready to fall asleep
   "a sleepy-eyed child with drooping eyelids"
   - sleepy, sleepyheaded

See also: asleep

• Sidonie-Gabrielle Colette
• SIDS
• siege
• siege of Orleans
• siege of Syracuse
• siege of Vicksburg
• siege of Yorktown
• Siege Perilous
• Siegfried
• Siegfried line
• siemens
• sienna
• sierra
• Sierra Leone
• Sierra Leone monetary unit
• Sierra Leonean
• Sierra lodgepole pine
• Sierra Madre Occidental
• Sierra Madre Oriental
• Sierra Nevada
• Sierra Nevada Mountains
• Sierra plum
• Sierra redwood
• sies
• siesta