letter box

Other forms: letter boxes

Definitions of letter box

1. noun

   a numbered compartment in a post office where mail is put to be called for
   synonyms: PO Box, POB, Post-Office box, call box

   type of:

   compartment

   a space into which an area is subdivided
2. noun

   public box for deposit of mail
   synonyms: mailbox, postbox

   types:

   pillar box

   a red pillar-shaped letter box

   type of:

   maildrop

   a drop where mail can be deposited
3. noun

   a private box for delivery of mail
   synonyms: mailbox

   type of:

   box

   a (usually rectangular) container; may have a lid