magnetic needle

magnetic needle

 
noun
a slender magnetized steel rod that, when adjusted to swing in a horizontal plane, as in a compass, indicates the direction of the earth's magnetic fields or the approximate position of north and south.
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Origin:
1840–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Magnetic needle is always a great word to know.
So is doohickey. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a gadget; dingus; thingumbob.
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Collins
World English Dictionary
magnetic needle
 
—n
a slender magnetized rod used in certain instruments, such as the magnetic compass, for indicating the direction of a magnetic field

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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