roll·er

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One that rolls or performs a rolling operation or activity.
• noun Any of various cylindrical or spherical devices that roll or rotate, especially.
• noun A small spokeless wheel, such as that of a roller skate or caster.
• noun An elongated cylinder on which something, such as a window shade or towel, is wound.
• noun A heavy revolving cylinder that is used to level, crush, or smooth.
• noun Printing A cylinder, usually of hard rubber, used to ink the type before the paper is impressed.
• noun A cylinder of wire mesh, foam rubber, or other material around which a strand of hair is wound to produce a soft curl or wave.
• noun A long rolled bandage.
• noun A heavy swelling wave that breaks on a coast.
• noun A tumbler pigeon.