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1.
The act of killing one's own son or daughter.

A parent who has committed such a murder.
Marvin Gaye was a victim of filicide. Susan Smith committed total filicide in Union, South Carolina, in 1994.
by Braska Spira July 31, 2003
 
2.
When a parent kills their own child or children i.e. son's or daughter's.

When Mom or Dad feels the urge to murder their own children.
Filicide is very popular in Islam and is being committed in western countries. Many young females have died with acts of filicide for not obeying Islam.

On the site The Killing Zone BlogSpot details how innocent children are being killed with acts of filicide by their parents for wanting the freedom of choice to believe in what they want to believe in, and date who ever they want to date.
by The Moody Poet January 21, 2007