arrowroots

noun

1. 1.Maranta arundinacea from the Marantaceae family, a large perennial herb native to the Caribbean area with green leaves about 15 centimeters long.
2. 2.Usually preceded by an attributive word: some other plant the rhizomes of which are used to prepare a substance similar to arrowroot (sense 3), such as Zamia integrifolia (Florida arrowroot) or Pueraria montana var. lobata (Japanese arrowroot or kudzu).
3. 3.A starchy substance obtained from the rhizomes of an arrowroot plant used as a thickener.