Audibly sands court door, primarily timber (9)

I believe the answer is:

beechwood

'timber' is the definition.
(I've seen this before)

'audibly sands court door primarily' is the wordplay.
'audibly' indicates a 'sounds like' (homophone) clue.
'sands' becomes 'beach' (I've seen this before).
'court' becomes 'woo' (synonyms).
'primarily' suggests taking the first letters.
The initial letter of 'door' is 'd'.
'beach' sounds like 'beech'.
'beech'+'woo'+'d'='BEECHWOOD'

(Another definition for beechwood that I've seen is " Fagus genus timber".)

I've seen this clue in The Telegraph.

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