| • | 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. |
