pet·i·ole /ˈpɛtiˌol/
  葉柄,柄,柄部
  Pet·i·ole n.
  1. Bot. A leafstalk; the footstalk of a leaf, connecting the blade with the stem. See Illust. of Leaf.
  2. Zool. A stalk or peduncle.
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  petiole
       n : the slender stem that supports the blade of a leaf [syn: leafstalk]