brachium
noun [ C ] anatomy specialized uk/ˈbreɪ.ki.əm/ us/ˈbreɪ.ki.əm/
plural brachia /ˈbreɪ.ki.ə/ us/ˈbreɪ.ki.ə/臂，尤指肩至肘之间的上臂
the arm, especially the upper arm from the shoulder to the elbow
臂状物
any body structure that looks like an arm