Peduncle

noun

1. The axis of an inflorescence; the stalk supporting an inflorescence.
2. A short stalk at the base of a leaf or reproductive structure.
3. A bundle of neurons connecting different parts of the brain.
4. In arthropods, the base segments of an antenna or stalk-like structures such as the peduncles of some barnacles
5. In vertebrates, the base any any relatively massive anatomical member connected to the body by a narrower section. Cf. caudal peduncle of fishes.