Meaning of CLUMP in English

CLUMP

I. clump 1 /klʌmp/ BrE AmE noun

[ Date: 1200-1300 ; Origin: Probably from Low German klump ]

1 . [countable] a group of trees, bushes, or other plants growing very close together

clump of

a thick clump of grass

in a clump

The roses were planted in clumps across the park.

2 . [countable + of] a small mass of something such as earth or mud

3 . [uncountable] the sound of someone walking with heavy steps:

I heard the clump of Ralph’s boots going up the stairs.

II. clump 2 BrE AmE verb

1 . [intransitive always + adverb/preposition] to walk with slow noisy steps

clump up/down/along etc

The kids clumped up the stairs in their boots.

2 . ( also clump together ) [intransitive and transitive] if separate objects clump together, or are clumped together, they form a group or solid mass:

Hair and soap had clumped together in the drain.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.