Now, the historic definition is: "To kill one in every ten of (a group of people, originally a mutinous Roman legion) as a punishment for the whole group."
The modern meaning is: "To kill, destroy, or remove a large proportion of the thing being decimated."
However, we now have the definition of the word in that very special galaxy far, far away: "To utterly kill, destroy, and annihilate any and all fragments of the Rebel Scum."
Edited by Veldrin