名詞 clump:

1. a grouping of a number of similar things
   同義詞：bunch, cluster, clustering
2. a compact mass
   同義詞：ball, clod, glob, lump, chunk
3. a heavy dull sound (as made by impact of heavy objects)
   同義詞：thump, thumping, clunk, thud

動詞 clump:

1. make or move along with a sound as of a horse's hooves striking the ground
   同義詞：clop, clunk, plunk
2. come together as in a cluster or flock
   同義詞：cluster, constellate, flock
3. walk clumsily
   同義詞：clomp
4. gather or cause to gather into a cluster
   同義詞：bunch, bunch up, bundle, cluster

1. Do you see yonder clump of trees (ie that clump of trees over there)?
   你看見那邊的一叢樹林了嗎?
2. Do you hear the clump of boots?
   你聽到靴子的咯咯聲嗎？
3. He was clumping about in heavy boots that time.
   那時他正穿著笨重的靴子走來走去。

clump

n.（名詞）
A clustered mass; a lump:
塊；團：
例句：
clumps of soil.
土塊

A thick grouping, as of trees or bushes.
樹叢，灌木叢：樹木或灌木的密集的一叢
A heavy, dull sound; a thud.
笨重的聲音：沉重、陰沉的聲音；重擊聲
v.（動詞）
clumped,clump.ing,clumps
v.intr.（不及物動詞）
To form lumps or thick groupings.
叢生：形成簇或密集群
To walk or move so as to make a heavy, dull sound.
重踏著走：以發(fā)出沉重、笨拙聲音的方式行走或移動
v.tr.（及物動詞）
To gather into or form lumps or thick groupings of.
形成一簇：使聚成或形成…的簇或密集

來源：
Probably Low German klump
可能為 低地德語 klump
from Middle Low German klumpe [cluster of trees]
源自 中古低地德語 klumpe [一簇樹]

【引伸】
clump.y
adj.（形容詞）