Crossword Genius

In this one endures some restraint (6)

Ross

I believe the answer is:

duress

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

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

'in this one endures some' is the wordplay.
'DURESS' is hidden within the letters.
But, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for duress that I've seen before include "The use of force or threats to get one's way" , "Coercion, pressure" , "Use of force or threats, often vile" , "Excessive pressure" , "Constraint, Compulsion" .)

I've seen this clue in The Globe and Mail.
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