Jack-in-the-pulpit noun4 •A plant native to woodlands of northern Europe, Arum maculatum. •A plant native to eastern North America, Arisaema triphyllum. •Any plant in the genus Arisaema. •Cat's cradle. formsJack-in-the-pulpits · Jacks-in-the-pulpit · jack-in-the-pulpits