Clump
Clump (klump) , noun
[Compare Dutch klomp lump, German klump, klumpen, Danish klump, Swedish klump; perh. akin to Latin globus, English globe. Compare Club.]
1.
An unshaped piece or mass of wood or other substance.
2.
A cluster; a group; a thicket.
A clump of shrubby trees.
3.
The compressed clay of coal strata. — Brande & C
Clump , transitive verb
To arrange in a clump or clumps; to cluster; to group. — Blackmore
Clump , intransitive verb
To tread clumsily; to clamp. [Provincial English] — Halliwell