plural mailboxes
chiefly US
1
: a public box in which letters and packages are placed to be collected and sent out
On the way to work, I dropped my letters in the corner mailbox.
called also (British) letter box, ((British)) postbox
2
: a private box on or near a house in which mail is placed when it is delivered
She checked her mailbox daily, hoping for a letter from her son.
called also (British) letter box
3
computers
: a computer folder that holds e-mail
an electronic mailbox
Cite this Entry
“Mailbox.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/mailbox. Accessed 15 Apr. 2026.
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