whirlwind    igihūhūta, agashūrurwe
En-En dictionary 
agashūrurwe     7  class 7
singular: aka-,aga-
  
(no pl.) whirlwind
igihūhūta (ibi-)     4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
whirlwind, heavy wind