1
a : an interlacement of the parts of one or more flexible bodies forming a lump or knob (as for fastening or tying together) b : the lump or knob so formed c : a tight constriction or the sense of constriction {my stomach was all in knots}
2
: something hard to solve : problem {a matter full of legal knots}
3
: a bond of union; especially : the marriage bond
4
a : a protuberant lump or swelling in tissue {a knot in a gland} b : the base of a woody branch enclosed in the stem from which it arises; also : its section in lumber
5
: a cluster of persons or things : group
6
: an ornamental bow of ribbon : cockade
7
a : a division of the log's line serving to measure a ship's speed b (1) : one nautical mile per hour (2) : one nautical mile —not used technically
8
: a closed curve in three-dimensional space
