appendage

noun

1. a subordinate part attached to something; an auxiliary part; addition.
2. Anatomy, Zoology. any member of the body diverging from the axial trunk.
3. Botany, Mycology. any subsidiary part superadded to another part.
4. a person in a subordinate or dependent position, especially a servile or parasitic follower.

noun

1. an ancillary or secondary part attached to a main part; adjunct
2. zoology any organ that projects from the trunk of animals such as arthropods
3. botany any subsidiary part of a plant, such as a branch or leaf

n.

1. A part or organ attached to a main structure and subordinate in function or size.