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 History of this Word

"lag" origin of "lag" is uncertain

"screw" is from "escroue" (hole that a screw turns in), spoken in France during 1000-1400 A.D.
which was from "scrofa" (sow, threads of a screw look like the curl of a sow's tail), spoken by ancient people in central Italy around 700 B.C.

"bolt" is from "bolt" (arrow), spoken by people in England during 450-1100 A.D.

Words related to this meaning

grammar is noun

drive, head, thread are parts of "lag screw"

"lag screw" is a type of screw

Definition

lag screw illustration lag screw illustration Rod with spiral threads and a square or hexagnal head that holds objects together. Usually manufactured from metal. Can be rotated into or out of the object using a wrench or pliers.

Examples of how the word is used

lag screw illustration Use a washer with the lag screw, so the head of the lag screw doesn't suck into the wood.
lag screw illustration Two lag bolts are to be screwed through the slots into the wood.