A more thorough explanation:

Definition: Ingress means the act of entering or the right to enter. It is often used together with egress, which means leaving. For example, an "ingress and egress easement" is the right to use someone else's land to enter and leave your own property.

• When you walk through the front door of a building, you are making an ingress.
• If you have a key to a locked gate, you have the right of ingress to the property behind it.
• John has an ingress and egress easement across his neighbor's land to get to his own property.

The examples illustrate how ingress refers to the act of entering or the right to enter. In the case of the ingress and egress easement, it is the right to use someone else's land to enter and leave your own property.