knot

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

tie or fasten into a knot

“knot the shoelaces”

tangle or complicate

something twisted and tight and swollen

“their muscles stood out in knots”

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

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

“the saw buckled when it hit a knot”

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

a tight cluster of people or things

“a small knot of women listened to his sermon”

make into knots; make knots out of

“She knotted her fingers”

a unit of speed equal to one nautical mile per hour or about 1.15 statute miles per hour