Learner's definition of VEHICLE
1 : a machine that is used to carry people or goods from one place to another
cars, trucks, and other vehicles
a stolen vehicle
The vehicle's driver was severely injured in the crash.
Have you seen his new car? It's a fine-looking vehicle.
2 : the thing that allows something to be passed along, expressed, achieved, or shown
an investment vehicle
Water and insects can be vehicles of infection.
art as a vehicle for self-expression
Words and pictures are vehicles of communication.
These big-budget movies are star vehicles for well-known actors.