The noun knot has 7 senses (first 3 from tagged texts)
1. (2) knot -- (a tight cluster of people or things; "a small knot of women listened to his sermon")
2. (2) knot -- (any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object)
3. (1) knot -- (a hard cross-grained round piece of wood in a board where a branch emerged; "the saw buckled when it hit a knot")
4. knot, gnarl -- (something twisted and tight and swollen; "their muscles stood out in knots"; "the old man's fists were two great gnarls"; "his stomach was in knots")
5. nautical mile, mile, mi, naut mi, knot, international nautical mile, air mile -- (a unit of length used in navigation; equivalent to the distance spanned by one minute of arc in latitude; 1,852 meters)
6. slub, knot, burl -- (soft lump or unevenness in a yarn; either an imperfection or created by design)
7. knot, greyback, grayback, Calidris canutus -- (a sandpiper that breeds in the arctic and winters in the southern hemisphere)
Overview of verb knot
The verb knot has 3 senses (first 2 from tagged texts)
1. (1) knot -- (make into knots; make knots out of; "She knotted der fingers")
2. (1) knot -- (tie or fasten into a knot; "knot the shoelaces")
3. ravel, tangle, knot -- (tangle or complicate; "a ravelled story")