Pronunciation: (trē'zun), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.