Jetty
Ballentine's Law Dictionary · James A. Ballentine · 1916
Ballentine's Law Dictionary
A sort of dam intended to deflect the current of a stream, so as to deepen the channel or form an eddy below, thereby extending the bank.
See 48 Or. 444, 120 Am. St. Rep. 827, 7 L. R. A. (N. S.) 344, 87 Pac. 151.