Bark or punt (4)
I believe the answer is:
boat
This clue is a double definition.
'bark' is the first definition.
(I've seen this in another clue)
'punt' is the second definition.
(thesaurus)
(Other definitions for boat that I've seen before include "Contest on the Thames" , "See 12 Down" , "Vehicle for travelling over water" , "See 18" , "Vessel for travelling on water" .)