Covers for border and row is new
I believe the answer is:
bed linen
'covers' is the definition.
(I've seen this before)
'border and row is new' is the wordplay.
'border' becomes 'bed' (a flower bed is the border of a garden).
'and' is a charade indicator (letters next to each other).
'row' becomes 'line' (I've seen this before**).
'is new' becomes 'n'.
'bed'+'line'+'n'='BED-LINEN'
'for' is the link.
(Other definitions for bed linen that I've seen before include "Sheets and pillowcases, for instance" , "Sheets and pillow cases, for instance" , "Sheets, duvets, etc" , "Sheets, pillowcases and duvet covers" , "Sheets and pillowcases, primarily" .)