Someone (mang-) rolls down rock(s) (-en) on someone or someplace (-an) or makes something heavy fall down from on high.
rugnáy
Nangloyo kamyaw kakoyab so bato.
Yesterday we rolled down (the pile of) rocks.
An āro saw Tirong a komayat, loywan ta sa so ārwaya bato.
If there are many pirates who climb up, let's roll down the many rocks on them.