from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A simple device, such as a lever, pulley, or inclined plane; a machine without moving parts.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device that only requires the application of a single force to work.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a device for overcoming resistance at one point by applying force at some other point
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