umwāmbiro (imy-)     2  class 2
singular: umu-
plural: imi-
  
leaven, fermenting agent
fermenting agent   umwāmbiro
En-En dictionary 
leaven    umwāmbiro
(to ~) kwāmbira
En-En dictionary 
yeast    umwāmbiro
(to put ~ in beer) kubetera
En-En dictionary