It means soft, delicate woman. It is a woman's name of Latin origin, although in some countries it is also used by men (Cuba and Mexico). There are variants such as Yorley and Yorleny.
It is a woman's name with some variants, such as Yorleni or Yorleny, and with a very dubious etymology; on the web there are sites that give it as Hebrew, perhaps Arabic, but I bet on some American language, Mexico or the Caribbean.