From Longman Dictionary of Contemporary Englishnew broomnew broomsomeone who has just started work in a high position in an organization and who is expected to make a lot of changes The company seems set to make a fresh start under a new broom. → new
Examples from the Corpus
new broom• At home in the afternoon he had bound them together in clusters to make three new brooms.• They charge ahead with their ill-advised new brooms.• What we need is a new broom.• The servants came scurrying with new brooms and pails; taper boys ran to replenish the wall-sconces.• When the new broom arrived, many officers left.• A new broom has swept through everything, but the basic furnishings of the old presuppositions go untouched.• As the new man at Century wielding the new broom, he expected that decisions and policies would come to his desk.• And I was a new broom with a reputation for sweeping clean. 