Groin

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Revision as of 03:34, 24 April 2007 by Ok (talk | contribs) (Based on Glossary of Bridge Terminology; Chapter LXXX of J.A.L. Waddell's Bridge Engineering (New York: Wiley, 1916))
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An arch construction formed by two segmental arches intersecting each other at right angles. A construction of timber and stone built out into a stream to retard or deflect the current.