The name Jacinthe is a French baby name. In French the meaning of the name Jacinthe is: Hyacinth.
Madeleine and Madeline are forms of Magdalene, which is well known as a name because of Saint Mary Magdalene. Magdalene means "from Magdala". Mary Magdalene's name is thought to be derived from Magdala – a village on the sea of Galilee. In Aramaic, "magdala" means "tower" or "elevated, great, magnificent".
This meaning is unknown, or Thistle is still searching for it. Stay tuned.