/ ˈenəmə; NAmE / noun
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
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WORD ORIGIN
late Middle English : via late Latin from Greek , from enienai send or put in, from en- in + hienai send.