Definition of arrowroot noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈærəʊruːt//
; NAmE NAmE//ˈæroʊruːt//
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a plant whose roots can be cooked and eaten or made into a type of flour, used especially to make sauces thick; the flour itself Word Originlate 17th cent.: alteration of Arawak aru-aru (literally ‘meal of meals’) by association with arrow and the noun root, the tubers being used to absorb poison from arrow wounds.
See the Oxford Advanced American Dictionary entry: arrowroot