(genus Heterodon), any of three species of North American nonvenomous snakes belonging to the family Colubridae. They are named for the upturned ...
[n] - harmless North American snake with upturned nose
noun harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed
any harmless North American snake of the genus Heterodon, the several species having an upturned snout and noted for flattening the head or playing dead when disturbed.