a person or thing that rolls.

a cylinder, wheel, caster, or the like, upon which something is rolled along.

a cylindrical body, revolving on a fixed axis, esp. one to facilitate the movement of something passed over or around it.

a cylindrical object upon which something is rolled up

the roller of a window shade.

a hollow, cylindrical object of plastic, stiff net, or the like, upon which hair is rolled up for setting.

a cylindrical body for rolling over something to be spread out, leveled, crushed, smoothed, compacted, impressed, inked, etc.

any of various other revolving cylindrical bodies, as the barrel of a music box.

Metalworking . a person in charge of a rolling mill.

a long, swelling wave advancing steadily.

a rolled bandage.