What is a ground Transfer?

What is a “Ground Transfer”?

A transfer basically refers to your ground transportation to and from a location. 
In other words, it’s the car, taxi, van, shuttle, bus, etc that picks you up at any one location and takes you to another. (A to B) 
You’ll normally hear this from your travel agent when he ask you how are you going to travel from the airport to your hotel or house or event.