Definitions
1.nounThe axis of an inflorescence; the stalk supporting an inflorescence.
2.nounA short stalk at the base of a leaf or reproductive structure.
3.nounA bundle of neurons connecting different parts of the brain.
4.nounIn arthropods, the base segments of an antenna or stalk-like structures such as the peduncles of some barnacles
5.nounIn vertebrates, the base any any relatively massive anatomical member connected to the body by a narrower section. Cf. caudal peduncle of fishes.
6.nounA stem attaching a mass of tissue (such as a polyp) to the body.
7.nounA collection of nerves in the appendage of an animal (such as the tip of a dolphin's tail).