CLUMP, noun 1. A thick, short piece of wood, or other solid substance; a shapeless mass. Hence clumper, a clot or clod. 2. A cluster of trees or shrubs; formerly written plump. In some parts of England, it is an adjective signifying lazy, unhandy.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI