1 a : a building where buses or trains regularly stop so that passengers can get on and off : STATION
I will meet you outside the bus terminal.
1 b : a building at an airport where people get on and off airplanes
Flight 1584 is now departing from Gate 6 in Terminal A.
You are not allowed in the terminal without a ticket.
2 : a computer or a combination of a keyboard and a video display that is connected to a system and used for entering or receiving data
Ten terminals are connected to this server.
3 : a part on a piece of electrical equipment (such as a car battery) where you make an electrical connection
You will need to clean the corrosion off the battery terminals.