Monseigneur
Concise Oxford English Dictionary © 2008 Oxford University Press:
Monseigneur /ˌmɒnsɛˈnjəː/
▶noun (pl. Messeigneurs /ˌmɛsɛnˈjəː/) a title or form of address for a French-speaking prince, cardinal, archbishop, or bishop.
– origin Fr., from mon ‘my’ + seigneur ‘lord’.
'Monseigneur' also found in these Oxford entries:

