U.S. [f. BOSS sb.6 + -ISM.] The system in which political parties are controlled by bosses or wire-pullers.
1875. St. Louis Dispatch, 15 April, 2/1. And now the Kansas City Journal takes up the cry of Bossism in the St. Louis Common council.
1881. Scribners Mag., Aug., 616. The event shows also that the days of bossism are closing.
1883. American, VI. 88. If Bossism and Hubbellism were found to be still the potential forces.