1.  arrowroot(n = noun.substance) - a nutritive starch obtained from the root of the arrowroot plant;
is a kind of amylum, starch

2.  arrowroot(n = noun.plant) american arrowroot, maranta arundinaceae, obedience plant - white-flowered West Indian plant whose root yields arrowroot starch;
is a kind of maranta

3.  arrowroot(n = noun.plant) achira, canna edulis, canna indica, indian shot - canna grown especially for its edible rootstock from which arrowroot starch is obtained;
is a kind of canna

1.  A white-flowered west Indian plant of the genus Maranta, esp. Maranta arundinacea, now cultivated in many hot countries. Its root yields arrowroot starch. It said that the Indians used the roots to neutralize the venom in wounds made by poisoned arrows. [1913 Webster]

2.  A nutritive starch obtained from the rootstocks of Maranta arundinacea, and used as food, esp. for children an invalids; also, a similar starch obtained from other plants, as various species of Maranta and Curcuma. [1913 Webster]

arrowroot, n. a plant of the family Marantaceae from which a starch is prepared and used for nutritional and medicinal purposes.

american arrowroot, arrowroot family, florida arrowroot, indian arrowroot, otaheite arrowroot, otaheite arrowroot starch