Definition of mailbox
1 : a box at or near a dwelling for the occupant's mail
2 : a public box for deposit of outgoing mail
3 : a computer file in which e-mail is collected
Examples of mailbox in a sentence
On the way to work, I dropped my letters in the corner mailbox.
She checked her mailbox daily, hoping for a letter from her son.
First Known Use of mailbox
MAILBOX Defined for English Language Learners
Definition of mailbox for English Language Learners
: a public box in which letters and packages are placed to be collected and sent out
: a private box on or near a house in which mail is placed when it is delivered
computers : a computer folder that holds e-mail
MAILBOX Defined for Kids
Definition of mailbox for Students
1 : a public box in which to place outgoing letters
2 : a private box (as on a house) for the delivery of incoming letters
Seen and Heard
What made you want to look up mailbox? Please tell us where you read or heard it (including the quote, if possible).