Finish stain off at club (9)

I believe the answer is:

satinwood

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'finish' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'stain off at club' is the wordplay.
'off' indicates anagramming the letters.
'at' is a charade indicator (letters next to each other).
'club' becomes 'wood' (wood is a kind of club).
'stain' anagrammed gives 'satin'.
'satin'+'wood'='SATINWOOD'

Can you help me to learn more?

(Other definitions for satinwood that I've seen before include "Material valued for cabinetmaking" , "Timber" , "tropical tree" , "Cabinet material" , "exotic tree?" .)

I've seen this clue in The Daily Express.

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