She could sit upon the low rough wall and look on and hear stories of the day.

她可以坐在粗糙的矮墙上，一边看，一边听当天发生的故事。

youdao

There is a kind of rough wall surface, which is said to be sound-absorbing.

有一种墙面是麻的，据说可以吸音。

《新英汉大辞典》

Behind us there was a wall of rough flagstone that smelled of dirt, of fields in summer with the sun beating down after a heavy rain.

NEWYORKER: The Reptile Garden

Analysts said the milder decline at the end of the day after such a rough start showed the Fed's effort to reassure Wall Street had an impact.

NPR: Fed Sends Signal with Deep Cut to Interest Rate