What does "bachelorism" mean?

Bachelorism: Bachelorhood; also, a manner or peculiarity belonging to bachelors. W. Irving. BACHELOR'S BUTTON Bach"e*lor's but"ton , (Bot.) A plant with flowers shaped like buttons; especially, several species of Ranunculus, and the cornflower (Centaures cyanus) and globe amaranth (Gomphrena). Note: Bachelor's buttons, a name given to several flowers "from their similitude to the jagged cloathe buttons, anciently worne in this kingdom", according to Johnson's Gerarde, p.472 (1633); but by other writers ascribed to "a habit of country fellows to carry them in their pockets to divine their success with their sweethearts." Dr. Prior.