- a jetty for diverting the current of a stream.
Origin of wing dam
An Americanism dating back to 1800–10
Also called spur, spur dike.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wing dam
The flume, the ditch, and the wing-dam, are the chief tasks of the river-miner.
The wing-dam is not often used, because the river-beds are in most places too narrow.