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(1)   (computer science) any computer that is hooked up to a computer network
(2)   Any bulge or swelling of an anatomical structure or part
(3)   The source of lymph and lymphocytes
(4)   (astronomy) a point where an orbit crosses a plane
(5)   (physics) the point of minimum displacement in a periodic system
(6)   Any thickened enlargement
(7)   A connecting point at which several lines come together


  1. A knot, a knob; a protuberance; a swelling.
  2. The point where the orbit of a planet, as viewed from the sun, intersects the ecliptic. The ascending and descending nodes refer respectively to the points where the planet moves from S to N and N to S. The respective symbols are ☊ and ☋.
  3. The joint of a stem, or the part where a leaf or several leaves are inserted.
  4. A hole in the gnomon of a dial, through which passes the ray of light which marks the hour of the day, the parallels of the sun's declination, his place in the ecliptic, etc.
  5. The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode.
  6. The point at which the lines of a funicular machine meet from different angular directions; -- called also knot.
  7. The knot, intrigue, or plot of a piece.
  8. A hard concretion or incrustation which forms upon bones attacked with rheumatism, gout, or syphilis; sometimes also, a swelling in the neighborhood of a joint.
  9. One of the fixed points of a sonorous string, when it vibrates by aliquot parts, and produces the harmonic tones; nodal line or point.
  10. A swelling.
  11. A vertex of a graph.
  12. A vertex or a leaf in a graph of a network, or other element in a data structure.
  13. A computer or other device attached to a network.