Stood up for the girl (4)
I believe the answer is:
rose
This clue is a double definition.
'stood up' is the first definition.
(I've seen this in another clue)
'girl' is the second definition.
'for the' acts as a link.
(Other definitions for rose that I've seen before include "Prickly bush" , "mounted" , "' a . . . ./By any other name would smell as sweet' (Shakespeare)" , "Prickly garden plant" , "Flower - ascended" .)