Longing or wish (6)
I believe the answer is:
desire
I believe this clue is a double definition.
'longing' is the first definition.
(I've seen this before)
'wish' is the second definition.
(I know that wish is a more specific form of desire)
(Other definitions for desire that I've seen before include "Strong wish" , "Reside in longing" , "Strong need" , "Hanker after" , "Famous play: ''A Streetcar Named ......''" .)