WordReference Random House Learner's Dictionary of American English © 2020
ˈroll•er ˌskate, n. [countable]
  • a form of skate with wheels, for use on a smooth surface.

  • ˈroll•er-ˌskate, v. [no object], -skat•ed, -skat•ing. 
  • to move by using roller skates.
  • roll•er skat•er, n. [countable]

    WordReference Random House Unabridged Dictionary of American English © 2020
    roller skate′, 
  • a form of skate with four wheels or rollers instead of a runner, for use on a sidewalk or other surface offering traction.
    • 1860–65, American.

    roll•er-skate  (rōlər skāt′),USA pronunciation v.i.,  -skat•ed, -skat•ing. 
    1. to glide about by means of roller skates.
    Also,  roller•skate′.  roller skat′er. 
    roller•skat′er, n. 
    • verb, verbal use of roller skate 1870–75

    Collins Concise English Dictionary © HarperCollins Publishers::
    roller skate n
    1. a boot or shoe with four small wheels attached that enable the wearer to glide swiftly over a floor or other surface
    vb roller-skate
    1. (intransitive) to move on roller skates

    roller skater n

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