Vernier is a municipality in the Canton of Geneva, in Switzerland. The name "Vernier" comes from the Celtic word "verne," which means ald…Vernier is a municipality in the Canton of Geneva, in Switzerland. The name "Vernier" comes from the Celtic word "verne," which means alder. Vernier is a municipality located in the canton of Geneva, Switzerland. The history of Vernier dates back to ancient times, and the region has seen various influences and changes over the centuries.