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1. The killing of a king.
2. One who kills a king.

[Latin rēx, rēg-, king; see reg- in Indo-European roots + -cide.]

reg′i·cid′al (-sīd′l) adj.
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References in periodicals archive ?
OBlessed with a keen eye for fashion and a stupendously arresting nose, he's both made the top ten in a hit-parade of greatest living Britons and been called a genocidal, regicidal lunatic.
Smyth's apocalyptic and borderline regicidal "On the Late Attempted Assassination of the Queen," published in 1843, but most likely written in 1840 (pp.
The first was the great Reformation textbook of the church; the second was issued in the first year of Elizabeth Is reign and revised the 1552 edition which was virtually stillborn; the 1662 edition marked an attempt to draw together the church which had suffered so horribly under the Puritans and the regicidal dictator, Cromwell.
This letter is not signed by Thomas Cromwell, that much-feared and cruel minister of Henry VIII who was executed with Sir Walter Hungerford, but by Oliver Cromwell, the regicidal leader of the Commonwealth over a century later.