| jack-in-the-pul·pit (jāk'ĭn-thə-pŏŏl'pĭt, -pŭl'-) n. pl. jack-in-the-pulpits An eastern North American tuberous herb (Arisaema triphyllum) having a striped, leaflike spathe with a bent blade and three-lobed leaves. Also called regionally Indian turnip. |