out-box /ˈaʊtˌbɑːks/ noun plural out-boxes
plural out-boxes
Learner's definition of OUT-BOX
[count]
1
US : a box or other container on a desk in which letters, notes, etc., that are being sent from the desk are placed(办公桌上的)发件盒 — called also (British) out tray
— see picture at office; compare in-box 2
computers : a computer folder that holds e-mail messages you have not yet sent(计算机电子邮件的)待发件箱