waterbar noun2 •A barrier built across a steeply sloping road or trail in order to direct the flow of water and prevent erosion; waterbreak.Most waterbar spacing, however, is in the magnitude of 80 - 120 feet. — 1973 •Waterstop.A valve type of waterbar therefore is maintained in the stressed condition caused by shrinkage of the concrete during setting. — 1968 formswaterbars
