enema
/ˈenɪmə/noun
(pl. enemas 或 enemata /ɪˈnemətə/)
1- a procedure in which liquid or gas is injected into the rectum, typically to expel its contents, but also to introduce drugs or permit X-ray imaging灌肠（法）。
1.1
- a quantity of fluid or a syringe used in such a procedure灌肠剂; 灌肠器。
词源
late Middle English: via late Latin from Greek, from enienai 'send or put in', from en- 'in' + hienai 'send'.