ditch   
aloalo
a fosse, a ditch, a precipice. (Prov.) [Richardson 1885]
hady
a ditch, a trench, a moat, a fosse. [Mal. gato, Menangabow kati; toba hati.] [Richardson 1885]
a pit, a hole, a ditch [Hallanger 1973]
mitatatra
to cut water-channels; to be ditched with water-channels [Hallanger 1973]