from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An instrument that uses a magnetized steel bar to indicate direction relative to the earth's magnetic poles.
from the GNU version of the Collaborative International Dictionary of English.
- noun An device using a magnet (such as a magnetic needle) to indicate the direction of magnetic north.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun military (
nautical) An instrumentcontaining a freely suspendedmagnetic element which displaysthe directionof the horizontal component of the Earth’s magnetic fieldat the pointof observation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun compass based on an indicator (as a magnetic needle) that points to the magnetic north
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