n 1  cap  :  a genus of herbaceous vines (family Convolvulaceae) that comprise forms (as the morning glories and the sweet potato, I. batatas) having showy bell- or funnel-shaped flowers and that include some which are sources of cathartic resins or psychoactive alkaloids (as lysergic acid amide)  2  also  ip*o*mea  :  a plant or flower of the genus Ipomoea  3  usu  ipomea  :  the dried root of a scammony (Ipomoea orizabensis) .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.