a heavy wood screw having a square or hexagonal head driven by a wrench.
- Also called coach screw, lag bolt.
Other definitions for lag-screw (2 of 2)
to fasten with a lag screw.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lag screw in a sentence
All of the rails should be tenoned into the posts thoroughly, even if the lag screw fastenings are used.Mission Furniture | H. H. Windsor
British Dictionary definitions for lag screw
a woodscrew with a square head
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012