from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A clustered mass; a lump: clumps of soil.
  • n. A thick grouping, as of trees or bushes.
  • n. A heavy dull sound; a thud.
  • intransitive v. To form lumps or thick groupings.
  • intransitive v. To walk or move so as to make a heavy dull sound.
  • transitive v. To gather into or form lumps or thick groupings of.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A cluster or lump
  • n. A thick group or bunch, especially of bushes or hair.
  • n. A dull thud.
  • v. To form clusters or lumps
  • v. To gather into thick groups
  • v. To walk with a heavy footfalls.

from the GNU version of the Collaborative International Dictionary of English

  • n. An unshaped piece or mass of wood or other substance.
  • n. A cluster; a group; a thicket.
  • n. The compressed clay of coal strata.
  • intransitive v. To tread clumsily; to clamp.
  • transitive v. To arrange in a clump or clumps; to cluster; to group.

from The Century Dictionary and Cyclopedia

  • To walk heavily and clumsily.
  • To form a clump or cluster; cluster; aggregate: said of the agglutination of certain bacteria in response to the action of definite substances. See serum diagnosis.
  • To form (bacteria) into a clump or cluster; agglutinate.
  • n. A thick, short, unformed piece of wood or other solid substance; a shapeless mass.
  • n. A cluster; a small, closely gathered group: used especially of trees or shrubs, but sometimes of other things and of persons.
  • n. A thick sole secured to an ordinary boot-sole by springs or by cement.
  • n. A small spiral curl of hair pressed flat between the disk-shaped ends of a pair of crimping-tongs, so as to lie close to the head.
  • n. A bivalve mollusk of the family Mactridæ, Lutraria elliptica. It has a broad flattish shell about 5 inches long and 3 inches high. It lives chiefly in muddy estuaries, buried a foot or two deep.
  • n. An aggregation of bacteria resulting from the action of agglutinins. See serum diagnosis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. walk clumsily
  • v. come together as in a cluster or flock
  • v. make or move along with a sound as of a horse's hooves striking the ground
  • n. a heavy dull sound (as made by impact of heavy objects)
  • n. a compact mass
  • v. gather or cause to gather into a cluster
  • n. a grouping of a number of similar things


from The American Heritage® Dictionary of the English Language, 4th Edition

Probably Low German klump, from Middle Low German klumpe, cluster of trees.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Probably from Middle Dutch clompe or Middle Low German klumpe (compare German Klumpen). Cognates include Danish klump (probably from Low German as well). Compare Norwegian (bokmål) klump


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