Pom·pa·dour 
(pŏmpə-dôr′, -dr′, pôɴ-pä-dr), Marquise de. Title of Jeanne Antoinette Poisson. 1721-1764.
(pŏmpə-dôr′, -dr′, pôɴ-pä-dr), Marquise de. Title of Jeanne Antoinette Poisson. 1721-1764. Mistress of Louis XV of France. She was a patron of the arts and exercised considerable political influence at court.