Black mole (5)

I believe the answer is:

jetty

I believe this is a double definition.

'black' is the first definition.
(thesaurus)

'mole' is the second definition.
(synonyms)

(Other definitions for jetty that I've seen before include "Pier - landing stage" , "Quay" , "Dock" , "Wharf" , "Small landing stage" .)

I've seen this clue in The Globe and Mail.

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