Noun
steam roller (plural steam rollers)
Alternative form of steamroller
Subsequently, the road surface was prepared by one grader, plying over a distance of one mile, shoveling thick clay-like soil on it and a heavy steam roller was used to compress the surface; all in efficient timing. Source: Internet
Russel described the hearing process as, “like a wood chipper, like a steam roller, like you were going to get destroyed.” Source: Internet