Banana relative (8)
I believe the answer is:
plantain
'banana relative' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plantain that I've seen before include "Pal at inn (anag)" , "Green-skinned banana" , "Banana-like fruit" , "Large banana - weed" , "Shrub; green banana" .)