Definition of enema noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈenəmə//
; NAmE NAmE//ˈenəmə//
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a liquid that is put into a person’s rectum (= the opening through which solid waste leaves the body) in order to clean out the bowels, especially before a medical operation; the act of cleaning out the bowels in this way Word Originlate Middle English: via late Latin from Greek, from enienai ‘send or put in’, from en- ‘in’ + hienai ‘send’.
See the Oxford Advanced American Dictionary entry: enema