reginicide

Noun

reginacide (countable and uncountable, plural reginacides)

1. (countable, uncommon) One who kills a queen.
   • However, my old enemy, Miss [Edith] Sitwell, is now enthroned. I was not at the coronation, I am not among her subjects. But I have no inclination left to be a reginacide or even a jeering republican.1950, Geoffrey Grigson, The Crest on the Silver: An Autobiography, London: Cresset Press, page 167
2. (uncommon) The killing of a queen (female monarch or wife of a king).
   • [A sketch of Edward Oxford’s attempted assassination of Queen Victoria.]1840, The Reginacide, or, An Attack on the Constitution, London: H. Hilliard, […]
3. (uncommon) The killing of a queen (reproductive female insect).
   • But the wasps make no such migration. The males and the old queens and workers all die when the autumn frosts set in, while the young queens, which have yet to lay their eggs, hie away to find protection in some quiet nook, where they remain until the first bright days of spring. It is then that...1886 December 2, F. Maule Campbell, “The Habits and Economy of Our Social Wasps”, in John Hopkinson, editor, Transactions of the Hertfordshire Natural History Society and Field Club, volume IV...