Vehicle

Part of speech: noun (n.)

1. That in or on which any person or thing is, or may be, carried, as a coach, carriage, wagon, cart, car, sleigh, bicycle, etc.; a means of conveyance; specifically, a means of conveyance upon land.

2. That which is used as the instrument of conveyance or communication; as, matter is the vehicle of energy. A simple style forms the best vehicle of thought to a popular assembly. Wirt.

3. A substance in which medicine is taken.

4. Any liquid with which a pigment is applied, including whatever gum, wax, or glutinous or adhesive substance is combined with it.