a small ripple.
a tiny ripple
noun 1. a shallow container of water in which waves are produced by vibrating an object in the water, used to observe or demonstrate wave phenomena.
adjective 1. characterized by ripples; rippling. 2. sounding like rippling water.
noun 1. a quantity of broken stone for foundations, revetments of embankments, etc. 2. a foundation or wall of stones thrown together irregularly. verb (used with object), riprapped, riprapping. 3. to construct with or strengthen by stones, either loose or fastened with mortar.
noun 1. (civil engineering) broken stones loosely deposited in water or on a soft bottom to provide a foundation and protect a riverbed or river banks from scour: used for revetments, embankments, breakwaters, etc