Wiktionary
bare-arse
a. 1 (context literally English) With the buttocks exposed, as for a spanking or a mooning. 2 (context by extension English) stark naked.
Usage examples of "bare-arse".
But to have her lifted up in the gown of the victim, through which her limbs can be seen, to make a public display of her before the dregs of humanity we have got here, this bare-arsed scum from Locris and Aetolia, this beastly rabble from Boeotia and Attica, these rapists and butter-eaters from Epirus, these turds from Thessaly who come to take part in a military expedition armed only with hay-forks, is it for this I raised her?
Because you’re going to see a lot worse than a bare-arsed woman my age before we’re done.