Crossword Genius

Wharf that's most important, we hear (4)

Ross

I believe the answer is:

quay

'wharf' is the definition.
(I know that quay is a type of wharf)

'most important we hear' is the wordplay.
'most important' becomes 'key' (I've seen this in another clue).
'we hear' shows a homophone (sound like).
'key' sounds like 'QUAY'.

'that's' is the link.

(Other definitions for quay that I've seen before include "Jetty" , "Dock's loading area" , "Dock, wharf" , "Pier" , "Landing stage, wharf" .)

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