Source : WordNet®

steamroller
     n 1: a massive inexorable force that seems to crush everything in
          its way [syn: {juggernaut}]
     2: vehicle equipped with heavy wide smooth rollers for
        compacting roads and pavements [syn: {road roller}]
     v 1: bring to a specified state by overwhelming force or
          pressure; "The Senator steamrollered the bill to defeat"
          [syn: {steamroll}]
     2: proceed with great force; "The new teacher tends to
        steamroller" [syn: {steamroll}]
     3: crush with a steamroller as if to level; "steamroller the
        road"
     4: overwhelm by using great force; "steamroller the opposition"
        [syn: {steamroll}]
     5: make level or flat with a steamroller; "steamroll the roads"
        [syn: {steamroll}]