- Clumper
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Clumper \Clump"er\, v. t. [Cf. G. kl["u]mpern to clod. See
{Clump}, n.]
To form into clumps or masses. [Obs.]
[1913 Webster]
Vapors . . . clumpered in balls of clouds. --Dr. H. More. [1913 Webster]
The Collaborative International Dictionary of English. 2000.