look up any word, like fleek:
V. Regicide is the killing of a monarch or monarchs. For those with limited vocabs, a monarch is a King or Queen.

N. A killer of Monarchs
The fierce Regicide left the King and Queen both dead.
by El Malvado October 01, 2005
the assassination of Reggie Jackson.
"Your honor, this is a clear case of Regicide!"
by Jackie Childs July 18, 2008
To kill the King.

To kill the Queen.

To kill a Monarch.
Queen Elizabeth I was forced to commit regicide in executing Mary Queen of Scots, but ultimately had no choice since Mary Queen of Scots was continuously plotting acts of failed regicide against her cousin Queen Elizabeth I.
by The Moody Poet January 21, 2007