Abos : colloquial contraction of "Aborigines"; not necessarily meant pejoratively, but nearly always perceived that way!
arse noun butt; bum; freckle
arsehole: noun `He's a fair dinkum (see) arsehole' (as in `jerk')
arvo: noun afternoon (shortened)
'Goin' to the footie this arvo?'
See the entire list of 'Slang A's: Slang A's