night writing

English

Noun

night writing (uncountable)

  1. A system of code using symbols of twelve dots arranged as two columns of six dots embossed on a square of paperboard, designed to allow military communication without light or noise. It is the forerunner of braille.

Synonyms
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.