If you drift off to sleep, you gradually fall asleep.
It was only when he finally drifted off to sleep that the headaches eased.
PHRASAL VERB : V P to n , also V P
If you drift off to sleep, you gradually fall asleep.
It was only when he finally drifted off to sleep that the headaches eased.
PHRASAL VERB : V P to n , also V P
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006