from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A plane set at an angle to the horizontal, especially a simple machine used to raise or lower a load by rolling or sliding.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One of the simple machines; a sloping surface such as a ramp such that an object can be raised with less effort than being lifted vertically.
from the GNU version of the Collaborative International Dictionary of English
- An inclined portion of track, on which trains or boats are raised or lowered from one level to another.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a simple machine for elevating objects; consists of plane surface that makes an acute angle with the horizontal
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