•A knot, a knob; a protuberance; a swelling.•One of the two points where the orbit of a planet, or comet, intersects the ecliptic, or the orbit of a satellite intersects the plane of the orbit of its primary.•The joint of a stem, or the part where a leaf or several leaves are inserted.•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.•The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode.•The point at which the lines of a funicular machine meet from different angular directions; -- called also knot.•The knot, intrigue, or plot of a piece.•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.•One of the fixed points of a sonorous string, when it vibrates by aliquot parts, and produces the harmonic tones; nodal line or point.•A swelling.

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