Amassed (3,2)
'amassed' is the definition.
(I've seen this in another clue)
This is all the clue.
(Another definition for stockpiled that I've seen is " hoarded".)
'amassed' is the definition.
(running up is a kind of amassing)
This is the entire clue.
(Other definitions for ran up that I've seen before include "Accumulated" , "significant rise" , "Sewed together quickly" .)