icāha (ivy-  4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
1. sin, fault, 2. crime
 icaha : Prefixless Present 2.class plural with 4.class sg. object of:
kwāha (-āshe)   v    to gather (from garden)
sin    icāha, igicumuro, ikigabitānyo
En-En dictionary 
sin    (to ~) gucumura, kugabitānya, gukora icāha
En-En dictionary 
 icaha found in: Kirundi II (Grammar)
chapter 3   Conditional Sentences – “if”
chapter 39   –tuma used to show Reason or Cause