a grounder that rolls along the infield
"The shortstop fields the pop fly and throws to first base, where the roller rolls slowly across the dirt into fair territory."
a long heavy sea wave as it advances towards the shore
"The massive roller crashed against the cliffs, sending white foam spraying into the air."
a small wheel without spokes (as on a roller skate)
"The child learned to balance carefully on the two smooth rollers of her new inline skates before taking off down the driveway."
a cylinder that revolves
"The printer uses a rubber roller to feed paper through the mechanism smoothly."
a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it
"a woman with her head full of curlers is not a pretty sight"
Old World bird that tumbles or rolls in flight; related to kingfishers
"The roller dove steeply toward the ground, tumbling through the air before catching an insect near the riverbank."
pigeon that executes backward somersaults in flight or on the ground
"The trainer watched as the trained roller performed its signature backward somersaults mid-air before landing gracefully."
Anything that rolls.
"The wealthy couple decided to buy a new roller instead of their current sedan."
Any rotating cylindrical device that is part of a machine, especially one used to apply or reduce pressure.
A Rolls-Royce car
In plain English: A roller is someone who rides on wheels, often used to describe skateboarders or people playing specific sports with wheeled equipment.
"She used a roller to smooth out the wrinkles in her skirt."
Usage: A roller refers specifically to the rotating cylinder itself within a machine rather than the entire apparatus it powers. Use this term when describing components like printing rollers or carpet installation tools where rotation applies direct pressure.
To roller skate.
"After work, they decided to go out and roller down by the river."
The word roller comes from Middle English, formed by adding the suffix "-er" to "roll." In television and film contexts, it specifically refers to a device consisting of rotating cylinders used during filming.