Fruit is getting watered, presumably? (6)
I believe the answer is:
raisin
'fruit' is the definition.
(raisin is a kind of fruit)
'is getting watered presumably?' is the wordplay.
I cannot quite understand how this works, but
'is' is found in the answer.
The remaining letters 'rain' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
(Other definitions for raisin that I've seen before include "Partially dried grape" , "Somewhat dry fruit" , "An iris (anag)" , "sultana, say" , "Dried red grape" .)