Chank n. (Zool.) The East Indian name for the large spiral shell of several species of sea conch much used in making bangles, esp. Turbinella pyrum. Called also chank shell.
... is as I have say." He shook his fists again at the mill. Its open windows vomited the staccato chatterings of the myriad looms. "It chews up the poor people. Hear its dam' teeth go chank—chank—chank!" ... — The Landloper - The Romance Of A Man On Foot • Holman Day
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