Origin of possie
noun, plural pos·sies. Australian.
Examples from the Web for possies
These men had crept into their "possies," or crevices in the wall, and tucked their toes out of the way.
The infantry alongside were in possies, as we called them, holes dug in the trenches to keep a man from being exposed.In the Line of Battle|Various
Ever ingenious, the troops commenced collecting tins, and anything that would keep their "possies" and dugouts dry.