Probably onomatopoeic or a variant of clump (“walk heavily and clumsily”), itself also onomatopoeic or perhaps from the notion of walking in clumps, from Dutch klomp (“clump, mass, wooden shoe”).
Bilêvkirina xwe baştir bike
Axaftin û jiberkirina " clomp " û gelek peyv û hevokên din di îngilîzî .