01-07-2013 12:01 PM
A purple feather is an item that means very little to the average person but means a great deal to a specific person. To give a purple feather is to give someone something that means a great deal only to them. http://purplefeather.com/why.html
01-07-2013 12:05 PM
Assassins' Bureau leaders would give the chosen Assassin a feather, allowing them to proceed with the actual mission. Upon killing his target, the Assassin would stain the feather with the blood of the slain, and present it to the Bureau leader.