roller

n. 1 a revolving cylinder for smoothing, spreading, crushing, stamping, hanging a towel on, etc., used alone or in a machine. B cylinder for diminishing friction when moving a heavy object. 2 small cylinder on which hair is rolled for setting. 3 long swelling wave.

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