What is the meaning of Drive-through?

Of an establishment, providing service to occupants of automobiles while they are in their still-running vehicle, especially when the vehicle does not park in a parking space and the goods received are not consumed until the vehicle vacates the lane.

Of a feature of such an establishment (especially a window), adapted to provide such service.

An establishment, especially a restaurant, providing drive-through service.

The window of such an establishment adapted for such purpose.

Source: wiktionary.org