Lines or ranks (4)
I believe the answer is:
rows
I believe this is a double definition.
'lines' is the first definition.
(I know this)
'ranks' is the second definition.
(I've seen this before)
(Other definitions for rows that I've seen before include "Rackets" , "Disagreements" , "Quarrels; ranks" , "Uses oars" , "Scraps" .)