Definition of "Knot" :

noun: a sandpiper that breeds in the Arctic and winters in the southern hemisphere

noun: any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object

noun: soft lump or unevenness in a yarn; either an imperfection or created by design

noun: a tight cluster of people or things

"A small knot of women listened to his sermon."

noun: something twisted and tight and swollen

"Their muscles stood out in knots."

noun: a hard cross-grained round piece of wood in a board where a branch emerged

"The saw buckled when it hit a knot."

noun: (of ships and wind) a unit of speed equal to one nautical mile per hour or about 1.15 statute miles per hour

verb: tie or fasten into a knot

"Knot the shoelaces."

verb: tangle or complicate

verb: make into knots; make knots out of

"She knotted her fingers."