kuvunika (-vunitse)   v    to break (vi) any slender thing, as bone
kuvunika umugongo   phr    to have back pain
bone    igufa
(to break, vt) kuvuna
(to break, vi) kuvunika
En-En dictionary 
break    (vi) gucīka, kumeneka, kumānyuruka
(vt) guca
(and scatter, vt) gusāvya
(any slender thing, vi) kuvunika
(any slender thing, vt) kuvuna
(completely, vi) kudēndūka, gufyonyoka, kuvunagura
(in two) gusāba
(the law) kurēnga, kuyoba
(object with flat surface, vt) kumena
(off by burning, tree, etc.) gutemuka
(off a piece, bread) kubega
(out, as rash) guhurira, guturika
(rope, chain) kuvutagura
(suddenly, unexpectedly) gukenyuka
(a taboo) kurēngwa, kuzirūra, kugōka
(to bits, vi) kumenagurika, gusatagurika, kuvunagura, kumānyagura
(to bits, vt) gucagagura, kumenagura, gusatagura, kuvunaguza
(up, vi) kumānyagurika, kumānyuka
(up, vt) kujānjagura
(a break, as bone) imvune
En-En dictionary 
back pain   kuvunika umugōngo
En-En dictionary 
 kuvunika found in: Kirundi I (Study lessons)
lesson 122   Summary of Tenses
 kuvunika found in: Kirundi II (Grammar)
chapter 26   Special Verb Endings