Lewis Short
pĕtĭŏlus (noun M) : dim.pes
* A little foot, little leg (post-Aug.).
* Lit.: nudus, Afr. ap. Non. 160, 16; Cels. 2, 18, 31: in petiolis capitulisque haedorum et vitulorum et agnorum,id. 2, 22, 2.
* Transf., a stem or stalk of fruits: petioli, quibus mala pendent,Col. Arb. 23, 2; of the olive,id. 12, 49, 8.
Charlton T. Lewis, Charles Short, A Latin Dictionary