0 a person, especially a child, who is tired and looks as if they want to sleep:
[ as form of address ] Come on, sleepyhead, let's get you to bed.
1 a person, esp. a child, who is tired and looks ready to sleep:
If only they had not been such cowards and sleepyheads!
We ran right in through a fleet of your sleepyheads.
When he had finished the others all laughed and called him a sleepyhead.
There were many wonderful things there, but as you're all yawning, and we couldn't make sleepyheads understand, for that you'll have to wait till another night.
