Word.ws English Dictionary

mail slot

mail slot noun: a slot in a wall or door through which mail is delivered.

Noun

mail slot (plural mail slots)

  1. A slot in a wall or door through which mail is delivered.
    • Stuffing ACT UP leaflets into the office door's mailslot.1989 April 15, Michael Ambrosino, “Acting Up In The Northwest”, in Gay Community News, page 16
    Synonyms:
    letterbox
  2. A designated storage location for interprocess messages.

Synonyms of mail slot

Forms of mail slot

pluralmail slots

Origin of mail slot

From mail + slot.

Questions about mail slot

What does mail slot mean?
Mail slot means a slot in a wall or door through which mail is delivered.
What part of speech is mail slot?
Mail slot is a noun.
What is the plural of mail slot?
The plural of mail slot is mail slots.

Words near mail slot in the dictionary

  1. mail receptacle
  2. mail relay
  3. mail relays
  4. mail shirt
  5. mail shirts
  6. mail slot
  7. mail slots
  8. mail stop
  9. mail stops
  10. mail train
  11. mail trains

Source and license

Adapted from Wiktionary: mail slot (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-mail slot.wav.

Cite this entry: “mail slot.” Word.ws, https://word.ws/mail_slot. Based on Wiktionary, CC BY-SA 4.0.