Idler vs. Roller - What's the difference?

Wikipedia

  • Roller

    The rollers are an Old World family, Coraciidae, of near passerine birds. The group gets its name from the aerial acrobatics some of these birds perform during courtship or territorial flights. Rollers resemble crows in size and build, and share the colourful appearance of kingfishers and bee-eaters, blues and pinkish or cinnamon browns predominating. The two inner front toes are connected, but not the outer one. They are mainly insect eaters, with Eurystomus species taking their prey on the wing, and those of the genus Coracias diving from a perch to catch food items from on the ground, like giant shrikes. Although living rollers are birds of warm climates in the Old World, fossil records show that rollers were present in North America during the Eocene. They are monogamous and nest in an unlined hole in a tree or in masonry, and lay 2–4 eggs in the tropics, 3–6 at higher latitudes. The eggs, which are white, hatch after 17–20 days, and the young remain in the nest for approximately another 30 days.

Wiktionary

  • Idler (noun)

    One who idles; one who spends his or her time in inaction.

  • Idler (noun)

    One who idles; a lazy person; a sluggard.

  • Idler (noun)

    Any member of a ship's crew who is not required to keep the night-watch

  • Idler (noun)

    A mechanical device such as a pulley or wheel that does not transmit power, but supports a moving belt etc.

  • Roller (noun)

    Anything that rolls.

  • Roller (noun)

    Any rotating cylindrical device that is part of a machine, especially one used to apply or reduce pressure.

  • Roller (noun)

    A person who rolls something, such as cigars or molten metal.

  • Roller (noun)

    A large rolling device used to flatten the surface of the pitch.

  • Roller (noun)

    A cylindrical tool for applying paint or ink.

  • Roller (noun)

    An agricultural machine used for flattening land and breaking up lumps of earth.

  • Roller (noun)

    One of a set of small cylindrical tubes used to curl hair.

  • Roller (noun)

    A roller towel.

  • Roller (noun)

    A small wheel, as of a caster, a roller skate, etc.

  • Roller (noun)

    One of a set of rolling cylinders allowing a rider to practise balance while training indoors.

  • Roller (noun)

    Any leaves, especially those in family Tortricidae.

  • Roller (noun)

    The pl=s, small ground snakes of the genus ver=161026.

  • Roller (noun)

    A long wide bandage used in surgery.

  • Roller (noun)

    A large, wide, curling wave that falls back on itself as it breaks on a coast.

  • Roller (noun)

    A bird.

  • Roller (noun)

    A throw which involves the player throwing the disc in a way that makes it roll, by that being able to travel further than if thrown in the air. Only used on holes with open areas with short or no grass.

  • Roller (noun)

    A breed or variety of roller pigeon that rolls (i.e. tumbles or somersaults) backwards (compare Penson roller, Birmingham roller, tumbler).

  • Roller (noun)

    (also written Roller) A car made by Rolls-Royce.

  • Roller (noun)

    A police patrol car or patrolman (rather than an unmarked police car or a detective)

  • Roller (noun)

    A padded surcingle that is used on horses for training and vaulting.

  • Roller (noun)

    A roll of titles or (especially) credits played over film or video; television or film credits.

  • Roller (noun)

    A wheelchair user.

Oxford Dictionary

  • Idler (noun)

    a person who avoids work or spends time in an aimless or lazy way.

  • Idler (noun)

    a pulley that transmits no power but guides or stretches a belt or rope.

  • Idler (noun)

    an idle wheel.

  • Roller (noun)

    a cylinder that rotates about a central axis and is used in various machines and devices to move, flatten, or spread something

    "use a roller to resettle turf laid during autumn and winter"

    "the sheets moved through rollers and down the folding machine"

  • Roller (noun)

    an absorbent revolving cylinder attached to a handle, used to apply paint

    "further coats can be applied by brush or roller"

  • Roller (noun)

    a small cylinder around which hair is rolled in order to produce curls

    "it's best to put rollers in when hair is slightly damp after washing"

  • Roller (noun)

    a long surgical bandage rolled up for convenient application.

  • Roller (noun)

    a long swelling wave that appears to roll steadily towards the shore

    "the Atlantic rollers"

  • Roller (noun)

    relating to or involving roller skates

    "roller hockey"

  • Roller (noun)

    a brightly coloured crow-sized bird with predominantly blue plumage, having a characteristic tumbling display flight.

  • Roller (noun)

    a bird of a breed of tumbler pigeon.

  • Roller (noun)

    a breed of canary with a trilling song.

  • Roller (noun)

    a car made by Rolls-Royce.

Webster Dictionary

  • Idler (noun)

    One who idles; one who spends his time in inaction; a lazy person; a sluggard.

  • Idler (noun)

    One who has constant day duties on board ship, and keeps no regular watch.

  • Idler (noun)

    An idle wheel or pulley. See under Idle.

  • Roller (noun)

    One who, or that which, rolls; especially, a cylinder, sometimes grooved, of wood, stone, metal, etc., used in husbandry and the arts.

  • Roller (noun)

    A bandage; a fillet; properly, a long and broad bandage used in surgery.

  • Roller (noun)

    One of series of long, heavy waves which roll in upon a coast, sometimes in calm weather.

  • Roller (noun)

    A long, belt-formed towel, to be suspended on a rolling cylinder; - called also roller towel.

  • Roller (noun)

    A cylinder coated with a composition made principally of glue and molassess, with which forms of type are inked previously to taking an impression from them.

  • Roller (noun)

    A long cylinder on which something is rolled up; as, the roller of a map.

  • Roller (noun)

    A small wheel, as of a caster, a roller skate, etc.

  • Roller (noun)

    Any insect whose larva rolls up leaves; a leaf roller. see Tortrix.

  • Roller (noun)

    Any one of numerous species of Old World picarian birds of the family Coraciadæ. The name alludes to their habit of suddenly turning over or "tumbling" in flight.

  • Roller (noun)

    Any species of small ground snakes of the family Tortricidæ.

Princeton's WordNet

  • Idler (noun)

    person who does no work;

    "a lazy bum"

  • Roller (noun)

    a grounder that rolls along the infield

  • Roller (noun)

    a long heavy sea wave as it advances towards the shore

  • Roller (noun)

    a small wheel without spokes (as on a roller skate)

  • Roller (noun)

    a cylinder that revolves

  • Roller (noun)

    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"

  • Roller (noun)

    Old World bird that tumbles or rolls in flight; related to kingfishers

  • Roller (noun)

    pigeon that executes backward somersaults in flight or on the ground

Illustrations

Roller

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