Top wine, one thousand pounds, rowing team picked up (5,3)
I believe the answer is:
grand cru
'top wine' is the definition.
(wine classification)
'one thousand pounds rowing team picked up' is the wordplay.
'one thousand pounds' becomes 'grand' (slang).
'rowing team' becomes 'crew' (as in a rowing crew).
'picked up' shows a homophone (sound like).
'crew' sounds like 'cru'.
'grand'+'cru'='GRAND CRU'
(Other definitions for grand cru that I've seen before include "Type of wine" , "Superior wine" , "fine wine" , "A wine of the best grade" , "special wine" .)