Scraps ranks (4)
I believe the answer is:
rows
This clue is a double definition.
'scraps' is the first definition.
(I've seen this in another clue)
'ranks' is the second definition.
(rank can mean a row or line of things)
(Other definitions for rows that I've seen before include "emotional exchanges" , "Rackets" , "Quarrels; ranks" , "Arguments" , "Columns" .)