CLUMP
thump, thumping, clump, clunk, thud
(noun) a heavy dull sound (as made by impact of heavy objects)
bunch, clump, cluster, clustering
(noun) a grouping of a number of similar things; “a bunch of trees”; “a cluster of admirers”
ball, clod, glob, lump, clump, chunk
(noun) a compact mass; “a ball of mud caught him on the shoulder”
bunch, bundle, cluster, clump
(verb) gather or cause to gather into a cluster; “She bunched her fingers into a fist”
clump, clomp
(verb) walk clumsily
cluster, constellate, flock, clump
(verb) come together as in a cluster or flock; “The poets constellate in this town every summer”
clop, clump, clunk, plunk
(verb) make or move along with a sound as of a horse’s hooves striking the ground
Source: WordNet® 3.1
Etymology
Noun
clump (plural clumps)
A cluster or lump; an unshaped piece or mass.
A thick group or bunch, especially of bushes or hair.
A dull thud.
The compressed clay of coal strata.
A small group of trees or plants.
(historical) A thick addition to the sole of a shoe.
Verb
clump (third-person singular simple present clumps, present participle clumping, simple past and past participle clumped)
(ambitransitive) To form clusters or lumps.
(ambitransitive) To gather in dense groups.
(intransitive) To walk with heavy footfalls.
Source: Wiktionary
Clump, n. Etym: [Cf. D. klomp lump, G. klump, klumpen, Dan. klump,
Sw. kllimp; perh. akin to L. globus, E. globe. Cf. Club.]
1. An unshaped piece or mass of wood or other substance.
2. A cluster; a group; a thicket.
A clump of shrubby trees. Hawthorne.
3. The compressed clay of coal strata. Brande & C.
Clump, v. t.
Definition: To arrange in a clump or clumps; to cluster; to group.
Blackmore.
Clump, v. i.
Definition: To tread clumsily; to clamp. [Prov. Eng.] Halliwell.
Source: Webster’s Unabridged Dictionary 1913 Edition