Definition of bull snake
: any of several large harmless constricting colubrid snakes (genus Pituophis) especially of the central and western United States that feed chiefly on rodents and are classified either as subspecies of the pine snake (P. melanoleucus) or as subspecies of their own species (P. catenifer) —called also gopher snake
First Known Use of bull snake
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Britannica.com: Encyclopedia article about bull snake
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