roller
part of speech
noun (a roller, rollers)
meaning for a pupil
1) A roller is a tube or cylinder that turns, used to flatten, spread or move things. tree →
2) A paint roller is a tool for painting walls. tree →
3) A hair roller (curler) is a small tube to curl hair. tree →
4) A roller is a big wave rolling in from the sea. tree →
5) A roller is a heavy machine that flattens roads or ground. tree →
sense in the lessons
In everyday life: paint rollers, hair rollers, roller skates, roller coasters, rolling pins. In science, rollers reduce friction for moving heavy things. Phrases: «roller skates», «roller coaster», «roller blind», «paint roller».
examples
- Dad painted the wall with a roller. tree →
- Grandma slept in hair rollers. tree →
- We went on the roller coaster at the fair. tree →
- I got roller skates for my birthday. tree →
- The steamroller flattened the new road. tree →
- Huge rollers crashed onto the beach. tree →
- The Egyptians may have moved stones on wooden rollers. tree →
- The whole twelve of them set to work with poles and rollers and rolled the big mill-stone to the brink of the well. tree →
note
Countable. Many compounds: roller coaster, roller skate, roller blind, steamroller. Rollers make moving things easier because rolling has less friction than sliding.
In the corpora
- Windmills and watermills once ground grain between big stones; today most flour is made in huge roller mills.
- A girl in Minnesota went roller skating without wrist guards, fell backwards onto her hands and broke both wrists.
- Skateboards and roller skates are hard to stop quickly, so they are used in parks and skate parks, not on busy streets.
- A swing is fastest at the bottom and slowest at the top, and a roller coaster swaps height and speed the same way.
Trees and pragmatics
Every meaning and example of «roller» parsed by Mova, each sentence with its dependency tree and frames.