Definition of "fratricide" [frat•ri•cide]

• The killing of one's brother or sister. (noun)
• One who has killed one's brother or sister. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "An investigation was immediately launched, and several documents show that the local chain of command was largely convinced it was fratricide from the beginning."
• "This caused the Venetian government to seize their treasure and to commission the statues as a cautionary, perpetual reminder that fratricide is considered very, very rude in that part of the world."
• "Frank J. Sulloway in his Born to Rebel: Birth Order, Family Dynamics and Creative Lives (New York: Random House, 1996) gives a paragraph to the Díaz brothers (273) and throughout his book refers to fratricide and sibling rivalry."