← BackshareGuesssleepyhead/ˈsliːpiˌhɛd/nounA person who is sleepy or who likes to sleep a lot, especially a child.My little brother is such a sleepyhead that he can nap anywhere.Come on, sleepyhead, it's time to wake up for school.Don't be a sleepyhead — we have a long drive ahead of us.Synonymsslugabedlie-abed