node

noun

1. a connecting point at which several lines come together
2. any thickened enlargement
3. (botany) the small swelling that is the part of a plant stem from which one or more leaves emerge
4. (physics) the point of minimum displacement in a periodic system
5. (astronomy) a point where an orbit crosses a plane
6. the source of lymph and lymphocytes
7. any bulge or swelling of an anatomical structure or part
8. (computer science) any computer that is hooked up to a computer network