nepocide

Noun

nepoticide (countable and uncountable, plural nepoticides)

1. The killing of one's own nephew.
   • The new accusation brought by Urban against Manfred of murdering his sister-in-law's embassador – it may be observed that, tacitly, he acquits him of parricide, fratricide, and nepoticide – requires a little explanation.1856, Mrs. William Busk, Mediæval Popes, Emperors, Kings, and Crusaders: Or, Germany, Italy and Palestine, from A.D. 1125 to A.D. 1268, volume IV, London: Hookham and Sons, →OCLC, page 294
2. (countable) One who kills his or her own nephew.
   • The fact that the Yongle emperor was therefore a usurper, regicide and nepoticide (nephew-killer) made compiling the Veritable Record – or official history – of his reign a most dangerous scholarly post. The official given this ticklish task managed to survive several drafts, finally producing one...2014 September 15, Martin Gayford, “There’s more to Ming than a vase [print version: 16 August 2014, pages R6–R7]”, in The Daily Telegraph (Review), archived from the original on 26 Oct 2015