/ˈsli:pihed ||; ˈslipɪˌhɛd/noun [C] (informal 非正式) used to speak to sb, especially a child, who looks as if he/she is falling asleep ﹙尤用来唤似要睡着的孩子﹚贪睡者，懒鬼: Come on, sleepyhead. It's time for bed. 醒醒，小懒鬼，上床睡觉了。