I write it at stolen intervals, under every difficulty. I design to secrete it in the wall of the chimney, where I have slowly and laboriously made a place of concealment for it.

我打算把它藏在烟囱墙壁里——我花了很长的时间，下了极大的功夫才挖出了这个隐藏之地。

youdao

A place for concealment and safekeeping, as of valuables.

贮藏处，暗窖：一个隐秘的空间，尤指用于贮存的预备货物。

youdao

She hides them under bed, significantly, a place of concealment.

CNN

The filing cites a number of alleged concealment incidents that took place primarily in 2010 and 2011.

WSJ: Hacking Plaintiffs Allege a Coverup