Work on the top of a bottle to get port (8)
I believe the answer is:
plymouth
'port' is the definition.
(I've seen this before)
'work on the top of a bottle' is the wordplay.
'work' becomes 'ply' (I've seen this in other clues).
'on' says to put letters next to each other.
'the top of a bottle' becomes 'mouth' (term for a bottle's opening).
'ply'+'mouth'='PLYMOUTH'
'to get' is the link.
(Other definitions for plymouth that I've seen before include "Laughter my ploy (anag)" , "The Pilgrim Fathers landed in USA on . . . Rock" , "that the Pilgrims left" , "where sailors found" , "Mayflower departure, arrival port" .)