1. (noun) any of various nonvenomous rodent-eating snakes of North America and Asia

• black rat snake
• blacksnake
• elaphe obsoleta
• mountain blacksnake
• pilot blacksnake
• chicken snake
• corn snake
• elaphe guttata
• red rat snake
• indian rat snake
• ptyas mucosus

1. (noun) any of various nonvenomous rodent-eating snakes of North America and Asia

• colubrid
• colubrid snake