steamroller
steam‧roll‧er1 /ˈstiːmˌrəʊlə $ -ˌroʊlər/ 
noun [countable]
1. a heavy vehicle with very wide wheels that is driven over road surfaces to make them flat
2. someone who uses their power and influence to make sure that something happens the way they want it to
steamroller2 verb [transitive]
informal to make sure something happens by using all your power and influence, or to defeat your opponents badly:
He steamrollered the bill through Parliament against fierce opposition.
| I |
noun [countable]1. a heavy vehicle with very wide wheels that is driven over road surfaces to make them flat
2. someone who uses their power and influence to make sure that something happens the way they want it to
| II |
verb [transitive]informal to make sure something happens by using all your power and influence, or to defeat your opponents badly: