caster

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

• noun One that casts.
• noun A small wheel on a swivel, attached under a piece of furniture or other heavy object to make it easier to move.
• noun A small bottle, pot, or shaker for holding a condiment.
• noun A stand for a set of condiment containers.

from The Century Dictionary.

• noun A suffix in place-names, appearing in several other forms, as -cester, -chester. See chester.
• noun One of the small callosities on the inner side of a horse's leg: more commonly known as chestnut.
• noun One who casts.
• noun One who computes; a calculator; especially, a calculator of nativities.
• noun One who assigns the parts of a play to the actors. One who makes castings; a founder.
• noun A vessel used to contain things in a powdered, liquid, or vaporous form, and to cast them out when needed; specifically, a bottle, vial, cruet, or other small vessel used to contain condiments for the table; also, a stand containing a set of such vessels. See casting-bottle, peppercaster, etc.
• noun A small wheel on a swivel, attached to the leg of a piece of furniture, in order to facilitate moving about without lifting. In this sense also improperly spelled castor.
• noun A cloak.
• noun A horse sold out of a regiment as useless.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who casts; ; a caster of cannon; a caster of accounts.
• noun A vial, cruet, or other small vessel, used to contain condiments at the table.
• noun A stand to hold a set of cruets.
• noun A small wheel on a swivel, on which furniture is supported and moved.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Someone or something that casts
• noun A wheeled assembly attached to a larger object at its base to facilitate rolling. A caster usually consists of
• noun A shaker with a perforated top for sprinkling condiments such as sugar, salt, pepper, etc.
• noun A stand to hold a set of shakers or cruets.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a shaker with a perforated top for sprinkling powdered sugar
• noun a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
• noun a worker who casts molten metal into finished products