From Longman Dictionary of Contemporary Englishpneumatic drillpneuˌmatic ˈdrill noun [countable] 
especially British EnglishTZTEC a large powerful tool worked by air pressure and used for breaking up hard materials, especially road surfaces SYN jackhammer American English
especially British EnglishTZTEC a large powerful tool worked by air pressure and used for breaking up hard materials, especially road surfaces SYN jackhammer American EnglishExamples from the Corpus
pneumatic drill• Minutes later he was making a noise like a pneumatic drill.• Her left arm by her side, her right elbow out at an angle and her forearm shaking like a pneumatic drill.• Perry, in a fishing jacket, moving like a marionette that swallowed a pneumatic drill.• At 100 decibels, the level produced by a chain saw or pneumatic drill, the allowable exposure is three hours. 