tailgate
/ˈteɪlˌɡeɪt/noun
Definitions
A hinged board or hatch at the rear of a vehicle that can be lowered for loading and unloading; a tailboard.
The hinged rear door of a hatchback.
Either of the downstream gates in a canal lock.
verb
Definitions
To drive dangerously close behind another vehicle.
Example: That idiot has been tailgating me for the last five minutes.
To follow another person through access control on their access, rather than on one’s own credentials, especially when entering a door controlled by a card reader.
(of a broker) To privately purchase or sell a security immediately after trading in the same security for a client.
To have a tailgate party.