What is the meaning of Clump?

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.

A thick addition to the sole of a shoe.

To form clusters or lumps.

To gather in dense groups.

To walk with heavy footfalls.

To strike; to beat.

Source: wiktionary.org