Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun mailbox

2 senses of mailbox

Sense 1
mailbox, letter box -- (a private box for delivery of mail)
       => box -- (a (usually rectangular) container; may have a lid; "he rummaged through a box of spare parts")

Sense 2
postbox, mailbox, letter box -- (public box for deposit of mail)
       => maildrop -- (a drop where mail can be deposited)