He would move toward the thorn bushes and put his back to them.
It is derived from the German word for a thorn bush.
There's a thorn bush across the gap to keep them in.
One day you may yet ride him to a safe ending, and no thorn bush.
'But I seem to have been through a thorn bush,' she said.
On his way, he stopped and uprooted a thorn bush.
I found an escape passage, but it opened on a thorn bush.
Then Michael met a curly thorn bush and came back to his senses.
"No, I left half of it on the thorn bush."
It was a difficult quarter hour in the thorn bushes.
Wörterbuch der Botanik