sergeant major

1. (Canada)A senior, noncommissioned appointment in the Army of a company or unit, directly responsible to the officer in charge for their soldiers' performance, standards, discipline, morale, welfare, et al, that can be held by a Warrant Officer or above.

   a noncommissioned officer serving as chief administrative officer of a headquarters unit of the Army

2. (US)The most senior rank of non-commissioned officer in the United States Army, ranking above a first sergeant. In the United States Marine Corps it ranks above First Sergeant and is equal in grade to Master Gunnery Sergeant.

   Hauptfeldwebel

   старшина́staršiná, ста́рший сержа́нтstáršij seržánt

3. (UK)An appointment (not a rank) in the British Army and Royal Marines, denoting the most senior non-commissioned officer in a battalion, regiment or company.

4. (Singapore)An appointment (not a rank) in the Singapore Army and National Cadet Corps, denoting the most senior non-commissioned officer in a battalion, regiment, company or unit.

5. A pintano, (Abudefduf saxatilis), a species of damselfish.

6. Abrota ganga, a butterfly of Southeast Asia.

regular