open letter
noun
a letter, often of protest or criticism, addressed to a specific person, but intended to be brought to public attention.
Origin of open letter
First recorded in 1875–80
OTHER WORDS FROM open letter
o·pen-let·ter, adjectiveWords nearby open letter
open house, keep,
open housing,
open interval,
open juncture,
open learning,
open letter,
open loop,
open market,
open marriage,
open mike,
open mind
British Dictionary definitions for open letter
open letter
noun
a letter, esp one of protest, addressed to a person but also made public, as through the press