[kawrt-mahr-shuh
l, -mahr-, kohrt-] 
noun, plural courts-mar⋅tial, court-mar⋅tials, verb, -tialed, -tial⋅ing or (especially British) -tialled, -tial⋅ling.| 1. | a court consisting of military or naval personnel appointed by a commander to try charges of offenses by soldiers, sailors, etc., against military or naval law. |
| 2. | a trial by such a court. |
| 3. | a conviction by such a court: He lost his privileges because of his court-martial. |
| 4. | a session of such a court: He attended the court-martial this morning. |
| 5. | to arraign and try by court-martial. |