- (especially North American English)
an address where somebody’s mail is delivered, when it is not where they live or work 中转通信地址；只作收邮件用的地址 The company’s address was just a mail drop. 该公司的地址只是一封邮件。 He’s been using the empty cottage as a mail drop. 他一直在把空屋子当作信箱。
- (North American English)
a box in a building where somebody’s mail is kept for them to collect （大楼内的）私人信箱 - (British English)
an occasion when mail is delivered 邮件的递送