The act of murdering your own daughter to preserve the honor of your islamic family. Often these murders are commited because the girl has been raped, or due to the child being considered a rebel in her behavior or choice of apparel, and are usually carried out by the father or brother of the victim. Like many other middle eastern traditions its main goal is to teach women that if they are not covered up and silent they are a piece of meat waiting to be raped, and if they are raped, it's their own fault.
Middle Eastern Family-
*girl crying* - ''Father, a man raped me today''
Father - ''Sharpen the machete son, we're Honor killing your sister tonight!''
*girl crying*- ''Father, a man raped me today''
Father - ''Get me my shotgun, son, we're gonna get this scumbag so he cant do it again''
Honor killing is killing a relative (usually but not always female). It isn't acceptable in Islam nor in any religion. It's a kind of primitive tradition in some societies (not only Middle Eastern). It's a stupid atrocity and it's not honorable at all.
The so-called honor killing is a dying tradition.
In Greek mythology Orestes kills his mother because she cheated on his father and let her lover kill him. Greek mythology isn't Islamic, is it??
"Christians living within parts of Africa and the Near East, such as sections of Egypt, Jordan and the Palestinian Authority, sometimes carry out the crime honor killing