Bible Dictionaries
Cerberus

Webster's Dictionary

(1):

(n.) A genus of East Indian serpents, allied to the pythons; the bokadam.

(2):

(n.) A monster, in the shape of a three-headed dog, guarding the entrance into the infernal regions, Hence: Any vigilant custodian or guardian, esp. if surly.

Bibliography Information
Webster, Noah. Entry for 'Cerberus'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​c/cerberus.html. 1828.