el Wikipedia Gravel WikipediaChinese20191021 ensp 0183 enspGravel largest fragment in this photo is about 4 cm A gravel road technically crushed stone in Indiana Gravel being unloaded from a barge Gravel ˈɡr 230vəl is a loose aggregation of rock fragments Gravel is classified by particle size range and includes size classes from granule to bouldersized fragments In the UddenWentworth scale Geological formation ensp 0183 ensp