Definition of: clump

(klump) noun
1. A thick cluster; tuft; lump.
2. A dull sound, as of heavy tramping.
3. An irregular, clumsy, thick piece or mass.
4. Bacteriol. A mass of bacteria in a state of rest, as by the agency of agglutinins.
—v.t.
1. To place or plant in a cluster or group.
2. To put an extra sole on (a shoe).
3. Bacteriol. To cluster together, as bacteria.
—v.i.
4. To walk clumsily and noisily.
5. To form clumps. [<LG. Cf. Du. klomp. Akin to CLUB.]
—clump′y, clump′ish adjective