Sentence:  At work Mr. Burns spies Homer munching complacently on a donut and hisses that each donut Homer shoves into his fat face brings him one donut closer to the poisoned donut Mr. Burns has ordered thrown into the mix as a form of culinary Russian Roulette, only to learn from Smithers that the plant's lawyers ultimately <WSD>nixed</WSD> the poisoned donut plan because “they consider it murder.” 
Meaning of the word marked with <WSD> tags:  To make something become nothing; to reject or cancel. (from 1903)