The term peduncle has several meanings:

• In botany, a peduncle (botany) is a flower stalk, or stem.
• In anatomy, a peduncle (anatomy) is a band of neurons, resembling a stalk, which connect varied parts of the brain.
• In zoology, a peduncle (zoology) is a stem, whereby a mass of tissue is attached to a body.
• In arthropod morphology, a peduncle (arthropods) is the base segments of an antenna.