roller

/'roulə/
Học thuật
Thân thiện
roller

A pigeon roller performs a backward somersault in mid-air.

Definition
  1. Noun:
    • A cylindrical device that rotates or revolves: A mechanical object, often a tube or cylinder, designed to roll, rotate, or apply pressure by turning.
    • A long, swelling wave: A large, heavy wave in the sea that moves forward with a rolling motion.
    • A type of bird: A bird, such as a species of the Coraciidae family (like the European Roller) known for aerial acrobatics, or a breed of domestic pigeon that performs tumbling rolls in flight.
    • A hair curler: A cylindrical device around which hair is wound to create curls.
    • A ground ball in baseball: A batted ball in baseball or softball that travels along the ground.
Examples of Usage
  • Noun (Cylindrical Device):
    • They used a heavy roller to flatten the asphalt on the road.
    • The printer's ink roller needs to be cleaned.
  • Noun (Wave):
    • The powerful rollers crashed against the cliffs during the storm.
  • Noun (Bird):
    • We saw a brightly colored European roller perched on the fence.
    • His hobby is breeding and flying roller pigeons.
  • Noun (Hair Curler):
    • She put her hair in rollers before going to bed.
  • Noun (Baseball):
    • The batter hit a slow roller to the shortstop.
Advanced Usage
  • "On a roller": Experiencing a period of consistent success or momentum, often in sports or business.
    • The team is on a roller, having won ten games in a row.
  • Technical/Industrial Context: Refers to specific parts in machinery, like conveyor belt rollers, paint rollers, or the rollers in a garage door mechanism.
Variants and Related Words
  • Rollerblade®: A brand name for inline skates, often used generically.
  • Rollercoaster: A type of amusement ride with sharp curves and steep slopes; metaphorically, a situation with alternating periods of excitement and difficulty.
  • Roller skate: A shoe or boot with wheels attached for gliding over a surface.
  • Rollerball: A type of pen that uses a rolling ball to dispense ink; also a sport.
  • Roller bandage: A long strip of gauze wound into a cylindrical roll for medical use.
Synonyms
  • Cylinder: A solid or hollow figure with circular ends and straight sides.
  • Wave: A long body of water curling into an arched form.
  • Curler: A device for curling hair.
  • Grounder: A batted ball in baseball that rolls or bounces along the ground.
Related Phrasal Verbs/Compounds

(Note: "Roller" itself is not typically used in phrasal verbs. The related verb "roll" forms phrasal verbs.) - Roller derby: A contact sport played on roller skates. - Roller mill: A machine for grinding or crushing using cylindrical rollers.

Related Idioms
  • Like a roller: Moving or progressing smoothly and steadily.
    • The project has been moving along like a roller since the new manager took over.
  • Between the roller and the hard place: A less common variant of "between a rock and a hard place," meaning in a difficult situation with two equally unpleasant choices.
roller

A pigeon roller performs a backward somersault in mid-air.

Noun
  1. pigeon that executes backward somersaults in flight or on the ground
  2. Old World bird that tumbles or rolls in flight; related to kingfishers
  3. 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
  4. a cylinder that revolves
  5. a small wheel without spokes (as on a roller skate)
  6. a long heavy sea wave as it advances towards the shore
  7. a grounder that rolls along the infield