Meaning of night writing | Babel Free
Definitions
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.
uncountable
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.