The image is a diagram on how to tie this knot. This knot is used to tie animals while cooking them. from there it becomes its name.
<a href="//commons.wikimedia.org/wiki/User:LadyofHats" title="User:LadyofHats">LadyofHats</a>
2005-02-03
The image i did myself based on the image one can find <a rel="nofollow" class="external text" href="http://www.geocities.com/roo_two/butcherknots.html">here</a>