Pronunciation: (stēm'rō"lur),[key] —n. 1. a heavy steam-powered vehicle having a roller for crushing, compacting, or leveling materials used for a road or the like.
2. (not in technical use) any similar vehicle with a roller.
3. an overpowering force, esp. one that crushes all opposition with ruthless disregard for individual rights.
—v.t. 1. to crush or flatten with a steamroller.
2. to overcome with superior force: to steamroller the competition. 3. to bring about the adoption of by overwhelming pressure: to steamroller the resolution through.
—v.i. to proceed with implacable force.
—adj. suggestive of a steamroller; ruthlessly overpowering: steamroller tactics.