pebble is a clast of rock with a particle size of 4 to 64 millimetres based on the Krumbein phi scale of sedimentology.. Wikipedia suggests Pebble . Pebble contains 6 letters and has 11 connections / rhymes. 131 Psychobabble Psychobabble Definition: Psychobabble (a portmanteau of "psychology" or "psychoanalysis" and "babble") is