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Found Jack 3 times.

Displaying results 1 to 10.

1. Jack
Young salmon, usually a male, that matures precociously.

2. Jack (jackstraw)
Bank protection element consisting of wire or cable strung on three mutually perpendicular struts.

3. Jacklines
A series of large steel or iron "jacks," usually up to 10 feet in height and cabled together at intervals and "deadmanned" to the bank or tied to trees along the margin of a stream to prevent cutting and eroding by slowing down high velocity flows. Can help reclaim eroded soils by trapping silt, sand, etc.

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