A useless palindrome (3)

I believe the answer is:

dud

I believe this is a double definition.

'a useless' is the first definition.
(I've seen this before)

'palindrome' is the second definition.

(Other definitions for dud that I've seen before include "Phoney" , "A palindromic failure" , "A palindromic washout" , "Non-functioning thing" , "Failing in its function" .)

I've seen this clue in the Evening Standard.

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