NZ a person who digs for fossilized kauri gum in a gum field
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
Examples from the Web for gum digger
The gold-digger is found in many parts of the earth; the gum-digger belongs to New Zealand alone.
Unlike the gold-seeker, the gum-digger can hope for no great and sudden stroke of fortune.