1.The offense of acting to overthrow one’s government or to harm or kill its sovereign.
2.A violation of allegiance to one’s sovereign or to one’s state.
3.The betrayal of a trust or confidence; breach of faith; treachery.
 
Offense of attempting to overthrow the government of one’s country or of assisting its enemies in war. In the U.S., the framers of the Constitution defined treason narrowly—as the levying of war against the U.S. or the “giving of aid and comfort to its enemies” in order to lessen the possibility that those in power might falsely or loosely charge their political opponents with treason