Quick answer
Blanche is a girl name meaning "white, fair-coloured".
Pronunciation: French /blɑ̃ʃ/; American English /ˈblænt͡ʃ/; British English /ˈblɑːnt͡ʃ/.
Meaning and history
From a medieval French nickname meaning "white, fair-coloured". This word and its cognates in other languages are ultimately derived from the Germanic word * blankaz. An early bearer was the 12th-century Blanca of Navarre, the wife of Sancho III of Castile. Her granddaughter of the same name married Louis VIII of France, with the result that the name became more common in France.
Notes and context
Usage: french, english