a conveyance that transports people or objects
"The delivery truck arrived early to drop off our new office supplies."
a medium for the expression or achievement of something
"his editorials provided a vehicle for his political views"
"a congregation is a vehicle of group identity"
"the play was just a vehicle to display her talents"
any substance that facilitates the use of a drug or pigment or other material that is mixed with it
"The artist added a drop of linseed oil to thin the paint, noting that without this vehicle, the color would remain too thick to spread evenly."
A conveyance; a device for carrying or transporting substances, objects or individuals.
"The truck served as an essential vehicle for moving fresh produce from the farm to the city market."
In plain English: A vehicle is any machine built to carry people or things from one place to another.
"The bus is just one type of vehicle used for public transportation."
Usage: Use vehicle to refer specifically to the physical object used for transport rather than abstract carriers like ideas or diseases. Avoid confusing it with synonyms such as car or truck unless you need that specific level of detail about the type of conveyance.
The word vehicle comes from the French véhicule, which was borrowed from the Latin vehiculum. Originally meaning a carriage or conveyance, it entered English through its connection to the Latin verb vehere, which means "to carry."