lag screw
NounSynonyms:
lag bolt
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ironynoun
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Webster's Dictionary (1913)
Lag screw
an iron bolt with a square head, a sharp-edged thread, and a sharp point, adapted for screwing into wood; a screw for fastening lags.
From the entry Lag.
Lag screw
. See under Lag.
From the entry Screw.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54