erf

World English Dictionary
erf (ɜːf)
 
n , pl erven
(South African) a plot of land, usually urban, marked off for building purposes
 
[Afrikaans]

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Erf is always a great word to know.
So is doohickey. Does it mean:
a fool or simpleton; ninny.
a gadget; dingus; thingumbob.
Collins
World English Dictionary
Erf (ɜːf)
 
n acronym for
electrorheological fluid: a man-made liquid that thickens or solidifies when an electric current passes through it and returns to a liquid when the current ceases

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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American Heritage
Abbreviations & Acronyms
ERF
Engineering Research Facility
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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