1.
general; admiral; commander
A high-ranking military officer; the highest general or flag officer rank in the former Imperial Japanese Army and Navy and in many foreign armed forces. Japan's Self-Defense Forces use other rank names.
2.
leader; boss; chief; head
The leader or head of a group. Used informally and affectionately for someone who is the leader or central figure, including the owner of a small restaurant or bar.
大将 has both a formal military sense and a casual everyday sense.
Usage
Sense 1 (military): the highest general officer rank, used of historical commanders and of foreign armed forces.
Sense 2 (informal):
- Calling a sushi chef or small restaurant owner 大将 is common and shows friendly respect
- ガキ大将: the dominant kid in a neighborhood group (the ringleader)
Watch out
Several words share the reading たいしょう: