Origin of traprock
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for traprock
Historical Examples of traprock
The principal hill consisted of traprock, and was so naked that only one or two trees of the Sterculia heterophylla grew upon it.
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