infundibulum
noun [ C ] medical specialized uk/ɪn.fʌnˈdɪb.jə.ləm/ us/ɪn.fʌnˈdɪb.jə.ləm/ infundibula /ɪn.fʌnˈdɪb.jə.lə/ /ɪn.fʌnˈdɪb.jə.lə/
（身体内的结构或器官）漏斗状
a structure or organ in the body that is shaped like a funnel (= an object that is wide at the top and narrow at the bottom)