1. A main road or highway, especially in ancient Rome. (Mainly used in set phrases, below.)
2. (electronics) A small hole in a printed circuit board filled with metal which connects two or more layers.
1. By way of; passing through.
- They drove from New York to Los Angeles via Omaha.
- You can enter the building via the western gate.
2. By (means of); using (a medium).
- I'll send you the information via e-mail.
3. As per (a mathematical equation).