Meaning of “asleep” - Learner’s Dictionary

asleep

adjective us uk /əˈsliːp/
Extra Examples
I fell asleep right in the middle of her speech.By the time I got there, she'd fallen asleep.Her eyes were shut and I thought she was asleep.I sneaked into his bedroom while he was asleep.I fell asleep on the sofa watching TV.
be asleep

B1 to be sleeping:

The children are asleep.
I was fast/sound asleep (= sleeping deeply).
fall asleep

B1 to start sleeping:

He fell asleep in front of the TV.

(Definition of “asleep” from the Cambridge Learner’s Dictionary © Cambridge University Press)