bayu verb English. Hulls rice in a mortar; pulverizes maize or coffee in a mortar; pulverizes cooked grains; gen. for pounding things with a pestle-like pole. Example sentence: Subanen. Naa sa' migela' na gupia megangu, migbayu dayun. English. Now then, when it was all really dry, then he pounded it. In group with: asud; lebek; lukpa Generic. tugda'