noun (n)

• a woman who engages in sexual intercourse for money(noun.person)

  Synonym:
  bawd, cocotte, cyprian, harlot, lady of pleasure, prostitute, sporting lady, tart, whore, woman of the street, working girl
  

  source: wordnet30
• an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man(noun.person)

  Synonym:
  kept woman, mistress
  

  source: wordnet30