The term "Jeanne Antoinette Poisson" refers to a historical figure rather than a common English word. Here’s an easy-to-understand explanation for new English learners:
Jeanne Antoinette Poisson (also known as Madame de Pompadour) was a French noblewoman who lived from 1721 to 1764. She is best known for being the mistress of King Louis XV of France. As his lover, she had a significant influence on his decisions and the policies of the French court.
"Jeanne Antoinette Poisson played a crucial role in the arts and politics of France during her time as the mistress of King Louis XV."
Jeanne Antoinette Poisson is an important historical figure known for her relationship with King Louis XV of France and her influence over French culture and politics.