roller

Noun
  1. is a type of: ground ball, groundball, grounder, hopper - (baseball) a hit that travels along the ground
  2. is a type of: moving ridge, wave - one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)
    same as: roll, rolling wave
  3. is a type of: wheel - a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines)
    subtypes: caster, castor - a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
    is a part of: roller skate - a shoe with pairs of rollers fixed to the sole
  4. is a type of: cylinder - a solid bounded by a cylindrical surface and two parallel planes (the bases)
    subtypes:
    • garden roller - heavy cast-iron cylinder used to flatten lawns
    • paint roller - a roller that has an absorbent surface used for spreading paint
    • platen - the roller on a typewriter against which the keys strike
    • sprocket - roller that has teeth on the rims to pull film or paper through
    • trundle - small wheel or roller
    is a part of: roller blind - a window shade that rolls up out of the way
  5. is a type of: mechanical device - mechanism consisting of a device that works on mechanical principles
    same as: crimper, curler, hair curler
  6. is a type of: coraciiform bird - chiefly short-legged arboreal nonpasserine birds that nest in holes
    subtypes:
    belongs to: coraciidae, family coraciidae - rollers
  7. is a type of: domestic pigeon - domesticated pigeon raised for sport or food
    same as: tumbler, tumbler pigeon

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