Clunch is a traditional building material of chalky limestone rock used mainly in eastern England and Normandy. Clunch distinguishes itself from archetypal forms of limestone by being softer in character when cut, such as resembling chalk in lower density, or with minor clay-like components. ==Use== It has been used in a wide variety of shapes suc... Found on http://en.wikipedia.org/wiki/Clunch
Clunch noun [ Perh. from clinch to make fast] 1. (Mining) Indurated clay. See Bind , noun , 3. 2. One of the hard beds of the lower chalk. Dana. Found on http://www.encyclo.co.uk/webster/C/97