Quick answer
Muriel is a girl name.
Pronunciation: English /ˈmjʊɹ.i.əl/; French /my.ʁjɛl/.
Meaning and history
Anglicized form of Irish Muirgel and Scottish Muireall. A form of this name was also used in Brittany, and it was first introduced to medieval England by Breton settlers in the wake of the Norman Conquest. In the modern era it was popularized by a character from Dinah Craik's novel John Halifax, Gentleman (1856).
Notes and context
Usage: english, french, irish, scottish, medieval breton