A member of a mendicant Christian order such as the Augustinians, Carmelites (white friars), Franciscans (grey friars) or the Dominicans (black friars).
An American fish, the silverside.
religieux
noun
A man bound by monastic vows; a monk.
How often have the words friar and religieux occurred in a corpus of books? (source: Google Ngram Viewer )