http://dictionary.reference.com/search?q=sabotage
While I’m at it… Word of the Moment:
sabotage, n.
1. Destruction of property or obstruction of normal operations, as by civilians or enemy agents in time of war.
2. Treacherous action to defeat or hinder a cause or an endeavor; deliberate subversion.
[French, from saboter, to walk noisily, bungle, sabotage, from sabot, sabot. See sabot.]
I don’t like the definition provided, as it doesn’t do justice to the origins. Sabot is the key; Sabots were wooden clog-like shoes worn by the working class during the early years of the Industrial Revolution, which could easily be thrown into machinery to cause a breakdown, and earn them a day off from the factory.