night writing
Noun
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Noun
night writing (uncountable)
- 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.
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.002