mukurwanje (ba-  1  class 1
singular: umu-
plural: aba-
  
1. older brother of a boy, 2. older sister of a girl
brother    (my) mwēne data
(your) mwēne so
(his, her, their) mwēne se
(older ~ of boy) mukuru, mukurwanje
(younger ~ of boy) mutoyi, murumuna
(of girl) musāza
(of my mother) mārume
(of your mother) nyokorume
(of his, her, their mother) inarume
(of father, uncle) dāta wacu, dāta wanyu, dāta wabo
(to be ~ and sister, or to be ~s) kuvūkana
(religious, monk) umufrere
En-En dictionary 
sister    mwēne data, mwēne se, mwēne nyina
(older ~ of girl) mukuru, mukurwanje
(of boy) mushiki
(younger ~ of girl) mutoyi, murumuna
(of my father) māsenge
(of your father) nyogosenge
(of his, her, their father) inasenge
(of man's sister or woman's brother) mwishwa
En-En dictionary 
 mukurwanje found in: Kirundi I (Study lessons)
lesson 114   Quotations, Direct and Indirect