Tree bark (3)

I believe the answer is:

bay

I believe this clue is a double definition.

'tree' is the first definition.
(bay is a kind of tree)

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

(Other definitions for bay that I've seen before include "Botany or Biscay, for example" , "Tree; horse; bark loudly" , "Reddish-brown horse" , "Curved inlet; tree" , "Small alcove" .)

I've seen this clue in The Independent.

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