turntable

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

• noun The circular horizontal rotating platform of a phonograph on which the record is placed.
• noun A phonograph exclusive of amplifying circuitry and speakers.
• noun A circular horizontal rotating platform equipped with a railway track, used for turning locomotives, as in a roundhouse.
• noun A rotating platform or disk, such as a lazy Susan.

from The Century Dictionary.

• noun A circular platform designed to turn upon its center, and supported by a series of wheels that travel upon a circular track laid under the edge of the platform.
• noun A device used in tracing the circular cementcells for microscope-slides.

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

• noun A large revolving platform, for turning railroad cars, locomotives, etc., in a different direction; -- called also turnplate.

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

• noun the circular rotating platform of a record player or DJ console
• noun a similar device to be connected to the amplifier of a hi-fi system
• noun a circular rotating platform used for turning locomotives, cars or trucks
• noun a rotating platform designed for use by a car, either motorized or manually rotated, and usually installed in a driveway or in a garage floor
• verb To manipulate sound using turntables; to perform turntablism.

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

• noun a circular horizontal platform that rotates a phonograph record while it is being played
• noun a revolving tray placed on a dining table
• noun a rotatable platform with a track; used to turn locomotives and cars