Definition of Braille noun from the Oxford Advanced Learner's Dictionary

 

Braille

 noun
noun
BrE BrE//breɪl//
 
; NAmE NAmE//breɪl//
 
(also braille)[uncountable]
 
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a system of printing for blind people in which the letters of the alphabet and the numbers are printed as raised dots that can be read by touching them All the exhibits are labelled in Braille. Word Origin mid 19th cent.: named after Louis Braille (1809-52), a French educationist who invented the system.
See the Oxford Advanced American Dictionary entry: Braille