WordReference Random House Unabridged Dictionary of American English © 2025
mail-in
(māl′in′),USA pronunciation adj.
n.
- conducted or responding by mail:a mail-in referendum.
n.
- something conducted or returned by mail, as a questionnaire or vote.
- adjective, adjectival, noun, nominal use of verb, verbal phrase mail in
'mail-in' also found in these entries (note: many are not synonyms or translations):
Addressograph
- acton
- boxholder
- bulk
- care
- jig
- junk mailer
- mailbag
- post
- priority mail
- rural delivery service