Webster's Revised Unabridged Dictionary · 1913

Peduncle

Peduncle , noun

[Formed from (assumed) Latin pedunculus, dim. of pes, pedis, a foot: compare French pédoncule.]

1.
(Botany) The stem or stalk that supports the flower or fruit of a plant, or a cluster of flowers or fruits.

The ultimate divisions or branches of a peduncle are called pedicels. In the case of a solitary flower, the stalk would be called a peduncle if the flower is large, and a pedicel if it is small or delicate.

2.
(Zoology) A sort of stem by which certain shells and barnacles are attached to other objects. See Illust. of Barnacle.
3.
(Anatomy) A band of nervous or fibrous matter connecting different parts of the brain; as, the peduncles of the cerebellum; the peduncles of the pineal gland.