1911 Encyclopædia Britannica/Clump

CLUMP, a word common to Teutonic languages, meaning a mass, lump, group or cluster of indefinite form, as a clump of grass or trees. The word is used of a wooden and clumsy shoe, made out of one piece of wood, worn by German peasants, and by transference is applied to the thick extra sole added to heavy boots for rough wear. Shoemakers speak of “clumping” a boot when it is mended by having a new sole fastened by nails and not sewn by hand to the old sole.