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

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.