begyu' noun English. The projectile of a bow or speargun, arrow, spear. Example sentence: Subanen. Subay megbaal dua' buuk begyu' nu pana', adun sa' mbeleng su salabuuk, atawaka mbali', su salabuuk, sukli dun. English. He must make two arrows for the bow, so that if one is lost, or broken, the other will replace it. Generic. besi c.f. ugyung