1580s, "lump; cluster or small, close group" (especially of shrubs or trees), from Middle English clompe "a lump" (c. 1300), from a Low German source (such as Dutch klomp "lump, mass," or Middle Low German klumpe "clog, wooden shoe"). Old English had clympre "lump, mass of metal."
<a href="https://www.etymonline.com/word/clomp">Etymology of clomp by etymonline</a>
Harper, D. (n.d.). Etymology of clomp. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/clomp