/ rɪˈvɪə(r); NAmE rɪˈvɪr/ noun
( pl. re·vers / -ˈvɪəz; NAmE -ˈvɪrz/) ( technical ) the edge of a coat, jacket, etc. that is turned back so that you see the opposite side of it, especially at the lapel
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WORD ORIGIN
mid 19th cent.: from French , literally reverse .