Disconnect a receptacle holding drink (6)
I believe the answer is:
nectar
'drink' is the definition.
(nectar is a kind of drink)
'disconnect a receptacle holding' is the wordplay.
'holding' says the answer is hidden in the clue.
'NECTAR' can be found hidden inside 'disconnect a receptacle'.
(Other definitions for nectar that I've seen before include "Sugary plant fluid" , "Sweet floral secretion" , "Secretion collected by bees" , "Sweet liquid secretion to attract pollinators" , "That's sweet" .)