i never heard of this term until recently and mainly from Tariq Nasheed?
It’s not merely a term but a concept of AA unification.
Malcolm X announced the establishment of the OAAU at a public meeting in New York'sAudubon Ballroom on June 28, 1964. He had written the group's charter with John Henrik Clarke, Albert Cleage, Jesse Gray, and Gloria Richardson, among others.
Organization of Afro-American Unity
The Organization of Afro-American Unity(OAAU) was a Pan-Africanist organization founded by Malcolm X in 1964. The OAAU was modeled on the Organisation of African Unity, which had impressed Malcolm X during his visit to Africa in April and May 1964. The purpose of the OAAU was to fight for the human rights of African Americans and promote cooperation among Africans and people of African descent in the Americas.