D defs.my
Entry 1 sense Webster, 1913

Marchioness

/mär'-shən-ĭs/ · Mar·chion·ess · IPA /ˈmɑɹʃənɪs/
01 n. The wife or the widow of a marquis; a woman who has the rank and dignity of a marquis.
  1. 1.
    The wife or the widow of a marquis; a woman who has the rank and dignity of a marquis.