Wiktionary
doss down
vb. (context British slang English)To sleep on someone's sofa or floor because there is no bed spare.
WordNet
Usage examples of "doss down".
It was one thing to doss down in a corridor for a night or grab a few hours sleep in the Hall, but quite another matter to be so cramped for four nights.
It was one thing to doss down in a corridor for a night or grab a few hours' sleep in the Hall, but quite another matter to be so cramped for four nights.
Camels and ponies were being picketed for the night, bales of merchandise were being stacked ready for loading, and fires were being lit round which the drivers would doss down near their animals.
One of us could doss down in the cabin for the night if there's any chance of a bit of kip which is not likely.