femme fatale /ˌfɛmfəˈtæl/ noun plural femmes fatales /ˌfɛmfəˈtælz/ plural femmes fatales /ˌfɛmfəˈtælz/ Learner's definition of FEMME FATALE
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: a very attractive woman who causes trouble or unhappiness for the men who become involved with her荡妇；祸水红颜