1.a grouping of a number of similar things;
a bunch of trees
2.a compact mass;
a ball of mud caught him on the shoulder
3.a heavy dull sound (as made by impact of heavy objects)
1.make or move along with a sound as of a horse's hooves striking the ground
2.come together as in a cluster or flock;
The poets constellate in this town every summer
3.walk clumsily
4.gather or cause to gather into a cluster;
She bunched her fingers into a fist