SINCE 1828
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
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