Weary embracing sweetheart having rows (6)
I believe the answer is:
tiered
'having rows' is the definition.
(arranged into tiers or rows)
'weary embracing sweetheart' is the wordplay.
'weary' becomes 'tired' (similar in meaning).
'embracing' is an insertion indicator.
'sweetheart' becomes 'e' (the heart/centre of 'sweet').
'tired' going around 'e' is 'TIERED'.
(Other definitions for tiered that I've seen before include "In ranks" , "Arranged in rising 5 ac" , "Laid out in layers, like wedding cake" , "in racks, say" , "Arranged in rows" .)