A peduncle is as stalk-like structure, zoologically and anatomically speaking.

That peduncle should be pink, not blue.

In botany, a peduncle is a flower stalk.

The flower of that plant requires a peduncle.

Middle cerebellar peduncle

The peduncle area on a whale, is from the Dorsal fin to the Tail.

The function of the cerebral peduncle is the impulse to control the movements of the body. The cerebral peduncle is two cylinders composed entirely of nerves.

A peduncle is a body part. It means "little foot" in Latin.