In the arms of Morpheus (6)
I believe the answer is:
asleep
'in the arms of morpheus' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for asleep that I've seen before include "Inattentive; numbed" , "Conked out" , "In the Land of Nod" , "See, pal strangely is not awake" , "Dormant; inattentive" .)