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lag screw

 - 3 dictionary results

lag screw

–noun
a heavy wood screw having a square or hexagonal head driven by a wrench.
Also called coach screw, lag bolt.


Origin:
1870–75

lag-screw

[lag-skroo]
–verb (used with object)
to fasten with a lag screw.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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lag screw  


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n.  A heavy wood screw having a square bolt head.

[From lag2 (from its original use in securing barrel staves).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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