What does "peduncle" mean?

Peduncle: (Zoöl.) A sort of stem by which certain shells and barnacles are attached to other objects. See Illust. of Barnacle.

Additional senses

  1. 2.(Anat.) 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.

Sources