Sabot

Sabots were a type of wooden shoe worn on Earth in the 19th century. Workers who felt their livelihood threatened by automation flung their sabots into the machines to stop them; this action became known as "sabotage". 

In 2269, when Spock theorized that the Organians surrounded their planet with an energy screen to discourage visitors, James T. Kirk commented that it "[threw] a large wooden shoe" into their plan to contact them regarding the war between the Federation and the Klingons.