tailgate

A hinged part that extends across the rear of a pickup truck or other vehicle and can be folded down or to a horizontal position for loading and unloading.

One of the pair of gates downstream in a canal lock.

To drive so closely behind (another vehicle) that one cannot stop or swerve with ease in an emergency.

To follow another vehicle too closely.

To participate in a tailgate party.

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.

To drive dangerously close behind another vehicle

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.