seahorse

noun
sea·​horse
plural seahorses

Definition of seahorse

1 : walrus
2 : a mythical creature half horse and half fish
3 : any of a genus (Hippocampus of the family Syngnathidae) of small bony fishes that have the head angled downward toward the body which is carried vertically and are equipped with a prehensile tail

Illustration of seahorse

Illustration of seahorse

seahorse 3

First Known Use of seahorse

15th century, in the meaning defined at sense 1

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The first known use of seahorse was in the 15th century

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Cite this Entry

“Seahorse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seahorse. Accessed 18 May. 2021.

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More Definitions for seahorse

sea horse

noun

Kids Definition of sea horse

: a small fish with a head which looks like the head of a horse

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