trench    umufunegi, umufuregi, umukuku
En-En dictionary 
umufunegi (imi-)     2  class 2
singular: umu-
plural: imi-
  
ditch, trench
umukuku (imi-)     2  class 2
singular: umu-
plural: imi-
  
1. ditch, trench, ravine, 2. line, row (of people or animals), 3. herd of animals (tame or wild)