Grand, for short (4)
I believe the answer is:
thou
'grand for short' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for thou that I've seen before include "Second person in the Bible" , "Archaic form of you" , "You, poetically of old" , "You (many years ago)" , "'Holier than - - '" .)