Akademik

letter box

noun

1. a numbered compartment in a post office where mail is put to be called for

• Syn: ↑Post-Office box, ↑PO Box, ↑POB, ↑call box

• Hypernyms: ↑compartment

2. public box for deposit of mail

• Syn: ↑postbox, ↑mailbox

• Hypernyms: ↑maildrop

• Hyponyms: ↑pillar box

3. a private box for delivery of mail

• Syn: ↑mailbox

• Hypernyms: ↑box

Useful english dictionary. 2012.