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

Verb

1. Express or signify by nodding
2. Lower and raise the head, as to indicate assent or agreement or confirmation
3. Let the head fall forward through drowsiness
4. Sway gently back and forth, as in a nodding motion
5. Be almost asleep