Generous sprinkling of Braille (7)
I believe the answer is:
liberal
'generous' is the definition.
(similar in meaning)
'sprinkling of braille' is the wordplay.
'sprinkling of' indicates anagramming the letters (the letters are sprinkled or scattered around).
'braille' anagrammed gives 'LIBERAL'.
(Other definitions for liberal that I've seen before include "Permissive about Braille" , "Politically progressive" , "Tolerant and open-minded in Braille" , "Ample; former politician" , "Old politician" .)