ar·row·root /-ˌrut, ˌrʊt/
 葛
 ar·row·root /ˈæroˌrut, ˈærə, ˌrʊt/ 名詞
 竹芋,竹芋澱粉
 Ar·row·root n.
 1. Bot. 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.
 Syn: -- arrowroot, American arrowroot, obedience plant.
 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.
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 arrowroot
      n 1: a nutritive starch obtained from the root of the arrowroot
           plant
      2: white-flowered West Indian plant whose root yields arrowroot
         starch [syn: American arrowroot, obedience plant, Maranta
         arundinaceae]
      3: canna grown especially for its edible rootstock from which
         arrowroot starch is obtained [syn: achira, indian shot,
          Canna indica, Canna edulis]