Definition of sleeping in US English:

sleeping

noun

  • The fact, state, or condition of being asleep.

    ‘it was 90 degrees at 1 a.m. a few weeks ago and sleeping was near impossible’

adjective

  • In a state of sleep.

    ‘he looked at the sleeping child’

Pronunciation

sleeping

/ˈslipɪŋ//ˈslēpiNG/