- hardpan(def 1).
- Australian. a shallow, normally dry depression in the ground that holds water after a heavy rain.
Origin of claypan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a layer of stiff impervious clay situated just below the surface of the ground, which holds water after heavy rain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012