1. Relating to or conducting exchanges with clients who drive up to a window and remain in their vehicles: drive-thru banking.

2. drive-through Performed or provided quickly and routinely: a drive-through delivery in a hospital.

1. A drive-through establishment, especially a restaurant.

2. A window at such an establishment, from which business is conducted.

3. The lane by which drivers approach such a window and drive away after being served: decided to go through the drive-through rather than eating inside.