enchantress; seductress; vamp; siren
A woman who uses her charm and beauty to manipulate or lead men astray; often carries a literary or dramatic tone.
彼女はまるで妖婦のように、多くの男を惑わせた。
She bewitched many men, just like an enchantress.
その映画の妖婦役は、冷酷で美しい
The role of the vamp in that movie was a cold-hearted, beautiful woman.
Composed of 妖 (bewitching, mysterious) and 婦 (woman, lady). The exact historical derivation is uncertain, but the kanji combination directly conveys the meaning of a seductive, dangerous woman.