1. The sound of a horse's hoofs hitting on a hard surface
   "We heard the clumping of the carriage horses on the cobblestone street";
   - clip-clop, clippety-clop, clop, clopping, clunking

1. Come together as in a cluster or flock
   "The poets clump in this town every summer";
   - cluster, constellate, flock
    
2. Gather or cause to gather into a cluster
   "She clumped her fingers into a fist";
   - bunch, bundle, cluster
    
3. Walk clumsily and noisily
   "He clumped across the wooden floor in his heavy boots";
   - clomp
    
4. Make or move along with a sound as of a horse's hooves striking the ground
   "The horses clumped down the cobblestone street";
   - clop

Type of: assemble, foregather [formal], forgather, form, gather, go, meet, sound, walk

Encyclopedia: Clumping