收银部部长的英语是 "Cashier Department Manager"。这个词的来源可能是由 "cashier"（收银员）和 "department manager"（部门经理）两个词组合起来的。

例句：

The cashier department manager is responsible for overseeing the daily operations of the cashier team.
收银部部长负责监督收银团队的日常运营。
The cashier department manager needs to have strong organizational and leadership skills.
收银部部长需要具备强大的组织和领导能力。