a woman who has the same rank as a baron. In the UK, baronesses use the title Lady or Baroness 女男爵（英国女男爵头衔为 Lady 或 Baroness） Baroness Thatcher 撒切尔女男爵
the wife of a baron 男爵夫人
Word Originlate Middle English: from Old French baronesse, from baron, from medieval Latin baro, baron- ‘man, warrior’, probably of Germanic origin.