bumper

nouns

a glass filled to the brim (especially as a toast)
"we quaffed a bumper of ale"
bumper
is a type of (narrower)
a container for holding liquids while drinking
drinking glass, glass
a mechanical device consisting of bars at either end of a vehicle to absorb shock and prevent serious damage
bumper
is derived from
bump
is a part of
a motor vehicle with four wheels; usually propelled by an internal combustion engine
"he needs a car to get to work"
auto, automobile, car, machine, motorcar
is a part of
an automotive vehicle suitable for hauling
motortruck, truck
is a type of (narrower)
mechanism consisting of a device that works on mechanical principles
mechanical device