A form of Malay — Of or relating to the Malays, a people living in Brunei and coastal regions of Borneo including Kalimantan in Indonesia, on the eastern coast of Sumatra, the islands of Bangka and Belitung, the Riau archipelago, in most of the Malay Peninsula including the southernmost provinces of Thailand, states of West Malaysia (where they are politically dominant in the federation), and in Singapore.