roller
🇺🇸
/ˈrəʊlər/
🇬🇧
/ˈrəʊlə(r)/
a tool or machine part that rolls over and over to flatten or move things
Use a roller to make the grass flat and even.
a big, rolling wave in the ocean
The big roller crashed onto the beach with great force.
a small tube used to curl hair
She put her hair in rollers to make it curly.