də̇ˈfasə noun
( plural defassa )
Etymology: New Latin (specific epithet of Kobus defassa ), from Latin, defassa, defessa, feminine of defassus, defessus, past participle of defatisci, defetisci to become tired, weak, from de- + fatisci to become weak, tired; akin to Latin fatigare to weary, fatigue — more at fatigue
: a large gray African antelope ( Kobus defassa ) having a shaggy coat and spreading ringed horns — called also waterbuck