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Etymology 1[edit]

clump +‎ -er


clumper (plural clumpers)

  1. A grass or other plant that tends to form clumps.
    • 2007 July 5, Anne Raver, “A Cane the World Can Lean On”, in New York Times[1]:
      Bamboo can be as delicate as the umbrella bamboo, Fargesia murieliae, a clumper with soft pea-green foliage and a weeping habit, or as heroic as Phyllostachys edulis, whose sturdy olive-green canes can grow 70 feet in a single season.

Etymology 2[edit]

Compare German klumpern (to clod). See clump (noun).


clumper (third-person singular simple present clumpers, present participle clumpering, simple past and past participle clumpered)

  1. (obsolete, intransitive) To form into clumps or masses.
    • (Can we date this quote?), Dr. H. More
      Vapours [] clumpered in balls of clouds.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for clumper in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)