The name for an oversized glass marble i.e. the childrens game of playing marbles.
When buying a bag of glass marbles back in the 1970's it would contain some ordinary sized marbles and a larger one. The ordinary ones were half inch diameter the scunger was one inch diameter. The one thing I can't remember is the value of the scunger i.e. how many marbles to a scunger. This word was used in north Dublin (Ireland) suburbs or "the hood" as we called it.