1. The floor of a building at ground level, typically the lowest floor accessible from the street or main entrance
The coffee shop is located on the ground floor of the building.
A cafeteria fica localizada no térreo do edifício.
2. An advantageous starting position or early stage of involvement in something
Getting in on the ground floor of this startup could be very profitable.
Entrar no térreo desta startup desde o início poderia ser muito lucrativo.