Drink causing trance (6)
I believe the answer is:
nectar
'drink' is the definition.
(I know that nectar is a type of drink)
'causing trance' is the wordplay.
'causing' is an anagram indicator.
'trance' with letters rearranged gives 'NECTAR'.
(Other definitions for nectar that I've seen before include "Sugary plant fluid" , "Sweet, delicious, drink" , "Suggary stuff in plants to attract insects" , "That's sweet" , "Divine drink" .)