Related Clues:

• Happy companion?
• Retired, in a way
• Nodding off
• Like Frere Jacques
• One of Snow White's seven
• Fictional miner with heavy eyelids
• Down for the night
• Not yet awake
• Still in the sack
• Due for a drop-off?
• Ready for bed
• Nodding, perhaps
• Still snoring
• With "slug," a lazybones
• Horizontal, perhaps