in what context have you seen the term used? I only know of one for orishanla. Where it seems to be another name for obatala or oxala.

"The Yoruba creator is called Olurun or Olodumare and is often assisted by the lesser god, Obatala. In the beginning, there was only water and chaos. The supreme being sent Obatala or Orishanla down from the sky to create some land out of the chaos. "