umuvumu (imi-  2  class 2
singular: umu-
plural: imi-
  
tree of which bark is used for clothing
tree    igiti
(fruit tree) igiti c'ivyamwa
(base of) igitsina, itsina
(trunk) umutūmba
(small ones around big one) umuvyāro
(big spreading) umutagare
(palm) ikigazi
(small, palmlike) igisāndasānda
(of whih bark was used for clothing) umumānda, icōmore, umuvumu, ikivumu
(of which bark is used for rope) umuvūmvu
(to be many) gusagāra
(to climb) kwūrira
(to climb down) kwūruruka
(to cut) gukera, gutema, guca
(to cut off top) gukēmūra
(trees grown very close together) impatane
En-En dictionary 
 umuvumu found in: Imigani (tales)
Umugani 51   Umwami w'i Burundi atera uw'i Rwanda