American Heritage® Dictionary of the English Language, Fourth Edition
- n. A heavy wood screw having a square bolt head.
Century Dictionary and Cyclopedia
- n. A flat-headed screw, used principally to attach lags to band-drums.
- n. An iron bolt with a square or hexagonal head and cut with a wood-screw thread. It is cylindrical under the bead, so as to admit of turning after it has entered the wood. In Great Britain called coach-screw.
GNU Webster's 1913
- n. 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.
- n. See under Lag.
- n. a heavy woodscrew with a square or hexagonal head that is driven in with a wrench
- From lag2 (from its original use in securing barrel staves). (American Heritage® Dictionary of the English Language, Fourth Edition)
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