Definition of sailfish
: any of a genus (Istiophorus, especially I. platypterus) of billfishes having a very large dorsal fin
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share sailfish
Time Traveler for sailfish
The first known use of sailfish was in 1879
See more words from the same year