Sentence:  Technology such as steam-powered hoists and "<WSD>buzzies</WSD>," hand-held, two-man air drills, speeded up production but did nothing to improve working conditions. The <WSD>buzzies</WSD>, in fact, produced so much fine dust that they led to a higher rate of silicosis, a debilitating respiratory disease, and were soon dubbed "widowmakers." 
Meaning of the word marked with <WSD> tags:  A hand-held pneumatic drill used in mining.