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]