Node (noun)

1. A point or place where something is joined, such as a joint or a knot in a stem or branch.
2. A point in a network or communication system, such as a computer or telephone, that is capable of sending or receiving information.

Origin:

From latin nodus "knot", from nuere "to bind".

Examples:

1. A node is a point of intersection or connection in a network.
2. The node on a stem is where a leaf or branch grows.
3. The network node acts as a gateway between different networks.
4. In a computer network, a node is any device that has the ability to transmit or receive data.
5. Telephone companies often call their central offices, where telephone lines are connected, nodes.