A slutty or easy girl; generally one who lives on an island.
Usually parties with unattractive older boys/is a pill popper.
James: See that ballex over there? she got her vag scraped by some kid who fingered her with long scraggle nails...
Keebler: Yep, that was me.... Want some cookies?
Belfast version of the english word bollocks. Pronounced with the harsh tongue that only Belfast folk have. bal-licks
"Get away from my car, ya dirty wee ballex!"