indigo snake

noun
  1. a large, deep-blue or brown harmless snake, Drymarchon corais, ranging from the southern U.S. to South America and invading burrows to prey on small mammals: the eastern subspecies D. corais couperi is now greatly reduced in number.

Origin of indigo snake

An Americanism dating back to 1880–85
Also called gopher snake.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for indigo snake

indigo snake

noun
  1. a dark-blue nonvenomous North American colubrid snake, Drymarchon corais couperi
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