lag screw

1 of 2

noun

: a screw having a wrench head and woodscrew threads terminating in a point

called also lag bolt

lag-screw

2 of 2

transitive verb

: to fasten or join with a lag screw

Word History

Etymology

Noun

lag entry 6; from its original use in securing lags to drums or cylinders

Transitive verb

lag screw

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