cicisbeo

noun

1. (historical)A man who escorts a married woman to social functions, especially in 18th-century Italy; a married woman's lover.

   “My old Cicisbee says it would do: & he is (or was poor fellow!) a famous Scholar.”

   “The office of Cicisbeo is however an intolerably expensive one; especially to our countrymen.”

   “Of course a cicisbeo is a normal enough figure in Alexandrian life, but things are going to become socially very boring for you if you go out with those two so much.”

   “He accuses the women of having cicisbei, the girls of having lovers.”