Noah Webster
Traitor
TRA'ITOR, noun [Latin traditor; trado, to deliver.]
1. One who violates his allegiance and betrays his country; one guilty of treason; one who, in breach of trust, delivers his country to its enemy, or any fort or place entrusted to his defense, or who surrenders an army or body of troops to the enemy, unless when vanquished; or one who takes arms and levies war against his country; or one who aids an enemy in conquering his country. [See Treason.]
2. One who betrays his trust.