hilum
noun [ C ] medical specialized uk/ˈhaɪ.ləm/ us/ˈhaɪ.ləm/ hila /ˈhaɪ.lə/ /ˈhaɪ.lə/ (also hilus)
（拉丁语，用于医学术语，血管和神经进入器官的凹陷处的通称）门
a hollow or narrow opening in an organ through which nerves, blood vessels, and tubes enter and leave
the renal hilum 肾门