Definition of 'grass snake'
- harmless European snake with a bright yellow collar; common in England
Synonyms: ring snake ringed snake Natrix natrix
- any of numerous nonvenomous longitudinally-striped viviparous North American and Central American snakes
Synonyms: garter snake
- either of two North American chiefly insectivorous snakes that are green in color
Synonyms: green snake