from the GNU version of the Collaborative International Dictionary of English
- proper n. A genus of endogenous plants found in tropical America, and some species also in India. They have tuberous roots containing a large amount of starch, and from one species (Maranta arundinacea, the American arrowroot or obedience plant) arrowroot (arrowroot starch) is obtained. Many kinds are cultivated for ornament.
Sorry, no etymologies found.