Meaning of ローラー in Japanese

Horses used to pull road-rollers, but the steamroller arrived with the invention of the steam engine.

The front-roller thrust angle is 2 degrees, probably there were plans to strengthen that angle a little when racing.

Show her how to roller skate.

Trucks came and dumped big stones on the road, then some trucks with little stones, then some trucks with tar and sand, and finally a steam roller came and rolled it all smooth, and the road was done.

Can we roller-skate in this park?