pebble//ˈpɛb.əl//A2Frequency Level 11NeutralNounpebbleSingularpebblesPlural1A small, smooth, rounded stone, especially one found on a beach or riverbed.The children collected pebbles on the beach.2A transparent, colorless rock crystal used in making lenses or eyeglasses.These antique spectacles have pebble lenses.Synonymstonecobble
