Wiktionary
mushball
n. (context sports English) A variant of softball with a bigger, softer ball and no gloves or mitts worn by the fielders.
Usage examples of "mushball".
Then he stood up, all six feet nine of him, holding the huge mushball aloft, and he hurled it with all his mightsplatagainst the back of a shaved brown head three rows ahead of him.
Why make him sit there for two hours while a buncha guys throw mushballs and do fuck-all?