Definition of arrowroot noun from the Oxford Advanced American Dictionary

 

arrowroot

 noun
noun
NAmE//ˈæroʊˌrut//
 
, NAmE//‑ˌrʊt//
 
[uncountable]
 
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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
See the Oxford Advanced Learner's Dictionary entry: arrowroot