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
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
The Exceptions Quiz III
-
- Which of these words does not mean "nonsense"?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share seahorse
Time Traveler for seahorse
The first known use of seahorse was in the 15th century
See more words from the same century