1960s. From French motard motorcyclist, motorcycle policeman from moto motorcycle (1898; shortened from either motocycle or its derivative motocyclette) + -ard.
Definition of motard in US English:
motard
nounˈməʊtɑː
A French motorcycle policeman.
Origin
1960s. From French motard motorcyclist, motorcycle policeman from moto motorcycle (1898; shortened from either motocycle or its derivative motocyclette) + -ard.