out box

US 
UK 
  • n.(办公室的)待发信件盘
  • Web信箱;魔幻盒子;输入输出盒
Plural Form:out boxes  
out box
n.
1.
(办公室的)待发信件盘(in an office) a container on your desk for letters or documents that are waiting to be sent out or passed to sb else
— see also
out tray