Wish or long for (6)
I believe the answer is:
desire
I believe this is a double definition.
'wish' is the first definition.
(I know that wish is a more specific form of desire)
'long for' is the second definition.
(I've seen this in another clue)
(Other definitions for desire that I've seen before include "Concupiscence" , "Covet" , "Crave" , "Want strongly" , "Famous play: ''A Streetcar Named ......''" .)