dup

dup

[duhp]
verb (used with object), dupped, dupping. Archaic.
to open.

Origin:
1540–50; contraction of do1 + up; cf. doff, don2

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dup.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
dup (dʌp)
 
vb , dups, dupping, dupped
archaic, dialect or (tr) to open
 
[C16: contraction of do1 + up]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Abbreviations & Acronyms
dup.
duplicate
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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