wabumbum Share definition Flag 1: Pertaining to Aborigini bush people. 2: Also a racist slang word in reference to people of African decent. 1: In the jungle, beware of the Wabumbum's. 2: Check out the fro on that Wabumbum! wabumbum by Remo Phabulou$ October 26, 2004 Get the wabumbum mug.