busisu' noun English. Believed to be of all snakes, fishes and esp. eels, the largest. Example sentence: Subanen. Ki mamak keni, minaik pikpailug diag lelesan, minateng diag dimpulu lelesan, mekisempel sug lelesan dua' buuk. Su salabuuk, mintubu' ditug dipag, su salabuuk, tu dema dipag. Linikesan nu mamak busisu' su dua' buuk lelesan. English. As for this snake, it climbed straight up a huge tree, arriving at the top, it was two huge trees. One grew on one side of the river and the other, on the other side. The busisu' snake wrapped itself around the two huge trees. Generic. mamak