arrowroot means: Starch that is similar to cornstarch in appearance and properties. A white, powdery thickening agent that is finer than flour. This is better than cornstarch as it gives the product a smooth finish and not a thick paste. The rhizomes that make Arrowroot are used to extract it. It was originally used by American Indians for the healing of arrow wounds. (in Cooking Dictionary)

What else does arrowroot mean?

Starch derived from the rhizomes a tropical American perennial plant (Maranta arundinacea). This is especially useful in cooking, as it acts as a thickener. (in Merlin Dictionary)

This plant’s rhizome can be used to extract starch or cooked as a vegetable. (in Merlin Dictionary)

It is the plant. (in Merlin Dictionary)

This edible starch is obtained from the tubers or rhizomes of many other plants including coontie. (in Merlin Dictionary)

You can choose any of them. (in Merlin Dictionary)