Ideographic: A bed 爿 in a house 宀; 未 provides the pronunciationRadical:

meaning for mèi:

  • - to sleep soundlyto yearn for sth even in one's dreams (idiom)
  • - to long for sth day and nightto dream
  • - to sleepto doze
  • - to take a nap
  • - nodding off to sleepto rise early and sleep late (idiom)
  • - to work hard
  • - to study diligently
  • - to burn the candle at both endslit. awake or asleep
  • - at any time