Crossword Genius

One of those roasted in joke? (8)

Ross

I believe the answer is:

chestnut

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

I cannot understand how the remainder of the clue works.

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(Other definitions for chestnut that I've seen before include "Tree (horse or sweet)" , "Reddish-brown colour" , "Deep reddish-brown" , "Stale joke or cliche" , "Wooden" .)

I've seen this clue in The Telegraph.
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