n. 1 lump, mass, clod, chunk, hunk, wad, gob, Colloq glob As the soup cooled, clumps of fat formed on its surface 2 bunch, cluster; thicket, copse; wood, Chiefly Brit spinney The deer disappeared into a clump of trees That clump will provide good cover for us.
v. 3 lump, mass, heap, collect, gather, bunch, pile She wore her hair clumped on top her head