rock    ibuye, ikibuye, urutare
(pile of rocks) igihongo
En-En dictionary 
rock    (to ~ a baby) kuzungagiza
En-En dictionary 
kw   prep    1. on, 2. at, 3. to (the outside of a thing), 4. from (outside of a thing), (form of ku before fifth class nouns in singular, e.g. kw ibuye - on a rock)
urutare (in-)     6  class 6
singular: uru-
plural: in-
  
hard packed earth, rock
kuzungagiza (-zungagije)   v    1. to turn around several times, 2. to rock a baby, 3. to agitate, 4. to wag tail
ingwa (in-)     3  class 3
singular: i-,in-
plural: i-,in-
  
chalk, chalky rock
igihongo (ibi-)     4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
pile of rocks
igisebuzi (ibi-)     4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
splashing of water in river or lake on rocks
ikibuye (ibi-  4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
rock
ubuhuku     8  class 8
singular: ubu-
  
(no pl.) cave, den (of wild animals, as in rocks)
ubuvumo   8  class 8
singular: ubu-
  
(no pl.) cave, den (as of wild animal, in rocks)
pile    ikirūndo
(of grain) amarwi
(of grain and chaff mixed) ubukūmbi
(of rocks) igihongo
(of wood) akarwi
En-En dictionary 
splash    kumījīra
(and tumble, water in river) gusūriranya
(splashing of water on rocks in river) igisebuzi
En-En dictionary