A thudding noise? (3)

I believe the answer is:

din

I'm a little stuck... Click here to teach me more about this clue!

'noise?' is the definition.
(din can mean a loud noise or disturbance)

'a thudding' is the wordplay.
'DIN' is hidden in amongst the letters.
However, I am uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for din that I've seen before include "Clamour" , "'Loud, harsh noise (3)'" , "Distracting noise" , "Unwanted noise" , "A lot of noise (3)" .)

I've seen this clue in the Evening Standard.

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