n. 叶柄, 梗, 柄部

[医] 柄, 茎

[ noun ]
the slender stem that supports the blade of a leaf
<noun.plant>

Petiole \Pet"i*ole\, n. [F. p['e]tiole, fr. L. petiolus a little
foot, a fruit stalk; cf. pes, pedis, a foot.]
1. (Bot.) A leafstalk; the footstalk of a leaf, connecting
the blade with the stem. See Illust. of {Leaf}.

2. (Zo["o]l.) A stalk or peduncle.