Fetching details from the dictionary...
(head) clerk
番頭に大事な鍵を任せた。
I entrusted the important keys to the head clerk.
番頭が朝早くから店を開けた。
The head clerk opened the shop early in the morning.
老舗の番頭は接客も経理も全て担っている。
The head clerk of the long-established shop handles everything from customer service to accounting.