Definition of "muckerism"

Hockey is an exciting and healthful form of exercise, well suited to college students, but if it is to retain favor the intercollegiate league should cut out the muckerism which has attended its contests on the ice in recent years.

1906, Princeton Alumni Weekly, volume 7, page 210

In a game between Stanford and California, in their series last month, there were manifestations of the muckerism with which we of the East are familiar — the rude joshing of the pitcher, the strident yapping of the fielders […]

1911, Collier's, volume 47, page 80