[General] about the word "discretion"

[burkzdemir]

Hi,

In the following sentence from the book of Dumas,

"...they looked around with hesitation, and seemed to doubt the discretion of the wall of M. de Treville's cabinet."

what does it mean "discretion of the wall" ?

Thanks.

 

[SirGod]

* Not a teacher

I would say that they were wondering if they could be heard through that wall.

 

[5jj]

In the following sentence from [STRIKE]the book of[/STRIKE] a translation into English of a novel (title?) by Alexandre Dumas:

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