What is the meaning of Poinciana?

A tropical tree, of species Delonix regia, with bright red flowers, native to Madagascar and now widely cultivated as an ornamental; the royal poinciana or flamboyant.

A tropical shrub, Caesalpinia pulcherrima, with bright orange-red flowers, originally native to the Americas and now widely cultivated as an ornamental.

Source: wiktionary.org