As an affectionate form of address: old friend; old man.
Origin
Late 19th century; earliest use found in Ernest Dowson (1867–1900), poet. From French mon vieux from mon my + vieux old man, old boy, use as noun of vieux.
Definition of mon vieux in US English:
mon vieux
nounmɒn ˈvjəː
As an affectionate form of address: old friend; old man.
Origin
Late 19th century; earliest use found in Ernest Dowson (1867–1900), poet. From French mon vieux from mon my + vieux old man, old boy, use as noun of vieux.