concrete. A stream (obsolete); also, the gliding portion of a stream, a shallow.
A place in a river where the bottom is scoured by the stream; a river-shallow with a gravel bottom.
U.S. = ripple, n.5 1a. Obsolete.
U.S. A stretch of shallow water in a river where the surface is mildly agitated by its passage over rocks, sandbars, or other obstructions; a…