roller skate
    n 1: a shoe with pairs of rollers fixed to the sole
    v 1: travel on shoes with steel or rubber rollers attached to
         their soles; "In some fashionable restaurants, the waiters
         roller skate around"

Skate \Skate\ (sk[=a]t), n. [D. schaats. Cf. Scatches.]
   A metallic runner with a frame shaped to fit the sole of a
   shoe, -- made to be fastened under the foot, and used for
   moving rapidly on ice.
   [1913 Webster]

         Batavia rushes forth; and as they sweep,
         On sounding skates, a thousand different ways,
         In circling poise, swift as the winds, along,
         The then gay land is maddened all to joy. --Thomson.
   [1913 Webster]

   Roller skate. See under Roller.
      [1913 Webster]

   10. (Zool.) Any species of small ground snakes of the family
       Tortricidae.
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   Ground roller (Zool.), any one of several species of
      Madagascar rollers belonging to Atelornis and allied
      genera. They are nocturnal birds, and feed on the ground.
      

   Roller bolt, the bar in a carriage to which the traces are
      attached; a whiffletree. [Eng.]

   Roller gin, a cotton gin inn which rolls are used for
      separating the seeds from the fiber.

   Roller mill. See under Mill.

   Roller skate, a skate which has small wheels in the place
      of the metallic runner; -- designed for use in skating
      upon a smooth, hard surface, other than ice.
      [1913 Webster]

Roller skate \Roll"er skate\
   1. a shoe with a set of wheels attached so that the wearer
      can glide over a flat surface. To move on such a device is
      reverred to as to skate or to rollerskate. To rollerskate
      is a form of recreation or sport.
      [PJC]

   2. a metal frame of the size of a shoe, with a set of wheels
      attached, and with adjustable clamps and straps that
      permit a shoe to be reversibly fastened to the frame. It
      serves the same purpose as the roller skate having the
      shoe permanently attached, but is typically less
      expensive.
      [PJC]