bladderpod n 1: North American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodic [syn: {Indian tobacco}, {Lobelia inflata}] 2: annual or perennial herbs with inflated seed pods; some placed in genus Lesquerella 3: any of several plants of the genus Physaria having racemose yellow flowers and inflated pods 4: any of several hairy North American herbs having yellow racemose flowers and inflated pods