Definition of arseholes:
(n) :
(Commonwealth, mildly vulgar, offensive or derogatory) An inconsiderate, mean-spirited, or otherwise contemptible person. (Less offensive than fucker or cunt.)
(n) :
(Commonwealth, mildly vulgar) The anus.
(n) :
(vulgar, by extension, often appositional) Anything (especially a place) that is unpleasant or undesirable.
(n) :
(UK, Ireland, vulgar, uncountable) A variant of the card game big two.