ETYM Latin nodus; perh. akin to Eng. knot. Related to Noose, Nowed.
1. A connecting point at which several lines come together.
2. Any bulge or swelling of an anatomical structure or part.
3. Any thickened enlargement; SYN. knob.
4. (Astronomy) A point where an orbit crosses a plane.
5. (Computer science) Any computer that is hooked up to a computer network; SYN. client, guest.
A terminal on a data communications network.
In physics, a position in a standing wave pattern at which there is no vibration. Points at which there is maximum vibration are called antinodes. Stretched strings, for example, can show nodes when they vibrate. Guitarists can produce special effects (harmonics) by touching a sounding string lightly to produce a node.

1. A junction of some type.
2. In networking, a device, such as a client computer, a server, or a shared printer, that is connected to the network and is capable of communicating with other network devices.
3. In tree structures, a location on the tree that can have links to one or more nodes below it. Some authors make a distinction between node and element, with an element being a given data type and a node comprising one or more elements as well as any supporting data structures. See also element (definition 1), graph, pointer (definition 1), queue, stack, tree.