Source : Webster's Revised Unabridged Dictionary (1913)

Bowknot \Bow"knot`\, n.
   A knot in which a portion of the string is drawn through in
   the form of a loop or bow, so as to be readily untied.

Source : WordNet®

bowknot
     n : a knot with two loops and loose ends; used to tie shoelaces
         [syn: {bow}]