Bible Dictionaries
Sea Serpent

Webster's Dictionary

(1):

Any marine snake. See Sea snake.

(2):

A large marine animal of unknown nature, often reported to have been seen at sea, but never yet captured.

Bibliography Information
Webster, Noah. Entry for 'Sea Serpent'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/sea-serpent.html. 1828.