Court-martial (noun)

1. A military court that tries members of the armed forces for serious offenses.
2. A trial by military court for a crime committed by a member of the armed forces.

Origin:

From the words "court" which refers to a legal trial and "martial" which refers to the military.

Examples:

1. He was court-martialed for insubordination.
2. The soldier faced a court-martial for desertion.
3. The court-martial found him guilty of embezzlement.
4. The court-martial proceedings were held in secret.
5. The court-martial sentence was harsh and the soldier was dishonorably discharged.