ubuvunguka   8  class 8
singular: ubu-
  
(no pl.) crumbs, chips of wood
 ubuvunguka : Prefixless Present 2. pers. sing. with 8.class sg. object of:
kuvūnguka (-vūngutse)   v    1. to crush, 2. to crumb easily, to crumble
chip    ibāngo
(of wood) ubuvunguka, utuvunguka
(to ~ stone) gukorogoshora
En-En dictionary 
crumbs    udukorokera, ubuvunguka, utuvunguka
(to become ~) kuvūngagurika
(to ~ easily) kuvūnguka
En-En dictionary