PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
Nisātaka
Nisātaka,in koka° J.VI,538,a certain wild animal; the meaning is not clear,etymologically it is to be derived fr.Sk.niśātayati to strike,to fell.See Kern,Toev.1.p.152,s.v.koka.The v.l.is °nisādaka,evidently influenced by nisāda.(Page 373)