Capture gold in carriage (6)
I believe the answer is:
landau
'carriage' is the definition.
(landau is a kind of carriage)
'capture gold' is the wordplay.
'capture' becomes 'land' (I've seen this before).
'gold' becomes 'au' (Au is the chemical symbol for gold).
'land'+'au'='LANDAU'
'in' is the link.
(Other definitions for landau that I've seen before include "Horse-drawn, folded-top carriage" , "An auld type of carriage" , "Four-wheeled horse-drawn carriage" , "Old-fashioned four-wheeled covered carriage" , "Transport" .)