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Synonyms

sea serpent

American  

noun

  1. an enormous, imaginary, snakelike or dragonlike marine animal.

  2. Astronomy. Sea Serpent, the constellation Hydra.

sea serpent British  

noun

  1. a huge legendary creature of the sea resembling a snake or dragon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of sea serpent

First recorded in 1640–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.