Source : Webster's Revised Unabridged Dictionary (1913)

Knot \Knot\, v. t. [imp. & p. p. {Knotted}; p. pr. & vb. n.
   {Knotting}.]
   1. To tie in or with, or form into, a knot or knots; to form
      a knot on, as a rope; to entangle. ``Knotted curls.''
      --Drayton.

            As tight as I could knot the noose.   --Tennyson.

   2. To unite closely; to knit together. --Bacon.

   3. To entangle or perplex; to puzzle. [Obs. or R.]

Source : WordNet®

knot
     n 1: a tight cluster of people or things; "a small knot of women
          listened to his sermon"
     2: any of various fastenings formed by looping and tying a rope
        (or cord) upon itself or to another rope or to another
        object
     3: a hard cross-grained round piece of wood in a board where a
        branch emerged; "the saw buckled when it hit a knot"
     4: 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" [syn: {gnarl}]
     5: a unit of length used in navigation; equivalent to the
        distance spanned by one minute of arc in latitude; 1,852
        meters [syn: {nautical mile}, {mile}, {mi}, {naut mi}, {international
        nautical mile}, {air mile}]
     6: soft lump or unevenness in a yarn; either an imperfection or
        created by design [syn: {slub}, {burl}]
     7: a sandpiper that breeds in the arctic and winters in the
        southern hemisphere [syn: {grayback}, {Calidris canutus}]
     [also: {knotting}, {knotted}]

knot
     v 1: make into knots; make knots out of; "She knotted der
          fingers"
     2: tie or fasten into a knot; "knot the shoelaces"
     3: tangle or complicate; "a ravelled story" [syn: {ravel}, {tangle}]
        [ant: {unravel}, {unravel}]
     [also: {knotting}, {knotted}]

knotting
     See {knot}