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.
Also called
gopher snake
.
Origin
1880-85,
Americanism
British Dictionary definitions for
indigo snake
indigo snake
noun
1.
a dark-blue nonvenomous North American colubrid snake,
Drymarchon corais couperi