kau' noun English. A hornbill with a protuberance above the beak, probably the rufous hornbill, Scientific name. Buceros hydrocorax. Note. Name is onomatopoeic of bird's call, perceived as kau'. Example sentence: Subanen. Su gupa dia minanga sapa' Baag, minita'u kamun dinapu' gupia kau'. English. As for the upa tree growing near where the stream called Baag empties into the river, earlier today I saw many hornbills eating its fruit. c.f. engik Generic. manukmanuk