appendage
/əˈpendɪdʒ/noun
1- a thing that is added or attached to something larger or more important (often used with negative or pejorative connotations)附加物, 附属物（常有否定或贬义的内涵）：
they treat Scotland as a mere appendage of England.
他们仅视苏格兰为英格兰的一个属地。
1.1
- Biology a projecting part of an invertebrate or other living organism, with a distinct appearance or function【生】附器, 附属物：
many species have specialized clutching appendages.
许多物种都有它们专用的抓附用的附器。